diff --git a/backend/services/brains/workflow_brain.py b/backend/services/brains/workflow_brain.py
index 27f3233..5d86086 100644
--- a/backend/services/brains/workflow_brain.py
+++ b/backend/services/brains/workflow_brain.py
@@ -724,19 +724,29 @@ class WorkflowBrain(BaseBrain):
         self._state.enter(node_id, WorkflowStatus.RUNNING_ACTION)
         await self._emit_node_active(node_id)
         data = self._engine.data(node_id)
+        runtime = self._require_runtime()
+        block_user_input = data.get("userInputPolicy") == "block"
+        if block_user_input and runtime.set_input_enabled:
+            # Blocking only suppresses new audio/text input while the Action
+            # runs.  It deliberately does not cancel the tool.  The default
+            # queue policy leaves input enabled; the turn lock serializes any
+            # completed user turn until this automatic path has finished.
+            runtime.set_input_enabled(False)
         tool_id = str(data.get("toolId") or "")
         tool = self._tool_by_id.get(tool_id)
-        if not tool:
-            self._store.values["system__last_action_status"] = "error"
-            self._store.values["system__last_action_error"] = f"工具不存在:{tool_id}"
-            return
         try:
+            if not tool:
+                raise ToolExecutionError(f"工具不存在:{tool_id}")
             arguments = self._store.render_data(data.get("arguments") or {})
             result = await self._tools.execute(
                 tool,
                 arguments,
-                result_assignments=data.get("resultAssignments") or {},
+                result_assignments=self._action_result_assignments(data),
             )
+            if result.get("status") != "ok":
+                raise ToolExecutionError(
+                    str(result.get("message") or "工具返回执行失败状态")
+                )
             updated_variables = list(result.get("updated_variables") or [])
             if updated_variables:
                 await self._emit_variables(
@@ -749,6 +759,26 @@ class WorkflowBrain(BaseBrain):
         except (ToolExecutionError, ValueError) as exc:
             self._store.values["system__last_action_status"] = "error"
             self._store.values["system__last_action_error"] = str(exc)[:2048]
+        finally:
+            if block_user_input and runtime.set_input_enabled:
+                runtime.set_input_enabled(True)
+
+    @staticmethod
+    def _action_result_assignments(
+        data: dict[str, Any],
+    ) -> dict[str, str] | None:
+        """Resolve node mapping semantics for ToolExecutor.
+
+        ``None`` means inherit the reusable tool's mapping, while an empty
+        dictionary explicitly disables all result assignments.
+        """
+        mode = str(data.get("resultAssignmentMode") or "none")
+        if mode == "inherit":
+            return None
+        if mode == "override":
+            assignments = data.get("resultAssignments")
+            return dict(assignments) if isinstance(assignments, dict) else {}
+        return {}
 
     async def _enter_handoff(self, node_id: str) -> None:
         self._state.enter(node_id, WorkflowStatus.HANDOFF)
diff --git a/backend/services/node_specs.py b/backend/services/node_specs.py
index 4c6798c..72ee34c 100644
--- a/backend/services/node_specs.py
+++ b/backend/services/node_specs.py
@@ -11,6 +11,8 @@ SPEC_VERSION = "3"
 NODE_TYPES = {"start", "agent", "action", "handoff", "end"}
 EDGE_MODES = {"llm", "expression", "always"}
 AGENT_ENTRY_MODES = {"wait_user", "generate", "fixed_speech"}
+ACTION_RESULT_ASSIGNMENT_MODES = {"inherit", "override", "none"}
+ACTION_USER_INPUT_POLICIES = {"queue", "block"}
 AUTOMATIC_NODE_TYPES = {"start", "action", "handoff"}
 EXPRESSION_OPERATORS = {
     "eq",
@@ -154,6 +156,24 @@ def _normalize_agent_data(data: dict[str, Any]) -> None:
         data["inheritGlobalConfig"] = not has_node_overrides
 
 
+def _normalize_action_data(data: dict[str, Any]) -> None:
+    """Add Action defaults while preserving the behavior of saved graphs.
+
+    Older Action nodes always passed an empty mapping when no node-level
+    assignments were configured, so they did *not* inherit the reusable
+    tool's assignments.  Infer ``none`` for that shape and ``override`` for
+    an existing non-empty mapping.  Newly created nodes should persist their
+    intended mode explicitly.
+    """
+    if "resultAssignmentMode" not in data:
+        assignments = data.get("resultAssignments")
+        data["resultAssignmentMode"] = (
+            "override" if isinstance(assignments, dict) and assignments else "none"
+        )
+    data.setdefault("resultAssignments", {})
+    data.setdefault("userInputPolicy", "queue")
+
+
 def _normalize_settings(settings: dict[str, Any], *, global_prompt: str = "") -> None:
     settings.setdefault("globalPrompt", global_prompt)
     settings.setdefault("defaultLlmResourceId", "")
@@ -179,10 +199,11 @@ def normalize_graph(graph: dict[str, Any] | None) -> dict[str, Any]:
         source.setdefault("nodes", [])
         source.setdefault("edges", [])
         for node in source["nodes"]:
-            if node.get("type") != "agent":
-                continue
             data = node.setdefault("data", {})
-            _normalize_agent_data(data)
+            if node.get("type") == "agent":
+                _normalize_agent_data(data)
+            elif node.get("type") == "action":
+                _normalize_action_data(data)
         return source
 
     nodes = source.get("nodes") or []
@@ -215,6 +236,8 @@ def normalize_graph(graph: dict[str, Any] | None) -> dict[str, Any]:
             data.setdefault("scope", "session")
         elif new_type == "agent":
             _normalize_agent_data(data)
+        elif new_type == "action":
+            _normalize_action_data(data)
         elif new_type == "start":
             prompt = str(data.pop("prompt", "") or "").strip()
             if prompt:
@@ -326,6 +349,20 @@ def validate_graph(graph: dict[str, Any]) -> list[str]:
                 data.get("entrySpeech") or ""
             ).strip():
                 errors.append(f"Agent 节点 {node_id} 的固定进入语不能为空")
+        elif node_type == "action":
+            data = node.get("data") or {}
+            assignment_mode = data.get("resultAssignmentMode")
+            if assignment_mode not in ACTION_RESULT_ASSIGNMENT_MODES:
+                errors.append(
+                    f"Action 节点 {node_id} 的结果变量模式无效:{assignment_mode}"
+                )
+            if not isinstance(data.get("resultAssignments"), dict):
+                errors.append(f"Action 节点 {node_id} 的结果变量映射必须是对象")
+            input_policy = data.get("userInputPolicy")
+            if input_policy not in ACTION_USER_INPUT_POLICIES:
+                errors.append(
+                    f"Action 节点 {node_id} 的用户输入策略无效:{input_policy}"
+                )
 
     if counts["start"] != 1:
         errors.append("工作流必须有且仅有一个 Start 节点")
diff --git a/backend/tests/test_brains.py b/backend/tests/test_brains.py
index 1418e18..cd8975c 100644
--- a/backend/tests/test_brains.py
+++ b/backend/tests/test_brains.py
@@ -92,6 +92,10 @@ class FakeFunctionParams:
         self.properties = properties
 
 
+async def noop_queue_frame(_frame):
+    return None
+
+
 class BrainRegistryTests(unittest.TestCase):
     def test_capability_matrix(self):
         self.assertEqual(
@@ -806,6 +810,187 @@ class WorkflowBrainTests(unittest.IsolatedAsyncioTestCase):
         self.assertEqual(variable_events[-1]["changed"], ["order_status"])
         self.assertEqual(variable_events[-1]["variables"], {"order_status": "paid"})
 
+    async def test_action_result_assignment_modes_reach_tool_executor(self):
+        tool = RuntimeTool(
+            id="client_action",
+            name="客户端操作",
+            function_name="show_message",
+            type="client",
+        )
+        brain = WorkflowBrain(
+            AssistantConfig(
+                type="workflow",
+                graph={
+                    "specVersion": 3,
+                    "settings": {},
+                    "nodes": [
+                        {"id": "start", "type": "start", "data": {}},
+                        {
+                            "id": "inherit_action",
+                            "type": "action",
+                            "data": {
+                                "toolId": "client_action",
+                                "resultAssignmentMode": "inherit",
+                            },
+                        },
+                        {
+                            "id": "override_action",
+                            "type": "action",
+                            "data": {
+                                "toolId": "client_action",
+                                "resultAssignmentMode": "override",
+                                "resultAssignments": {"choice": "action"},
+                            },
+                        },
+                        {
+                            "id": "none_action",
+                            "type": "action",
+                            "data": {
+                                "toolId": "client_action",
+                                "resultAssignmentMode": "none",
+                            },
+                        },
+                    ],
+                    "edges": [],
+                },
+                tools=[tool],
+            )
+        )
+        captured = []
+
+        async def execute(_tool, _arguments, *, result_assignments=None):
+            captured.append(result_assignments)
+            return {"status": "ok", "updated_variables": []}
+
+        brain._runtime = BrainRuntime(
+            context=LLMContext(messages=[]),
+            llm=FakeLLM(),
+            queue_frame=noop_queue_frame,
+            set_system_prompt=lambda _prompt: None,
+            set_tools=lambda _tools: None,
+            call_end=FakeCallEnd(),
+        )
+        brain._tools.execute = execute
+
+        await brain._enter_action("inherit_action")
+        await brain._enter_action("override_action")
+        await brain._enter_action("none_action")
+
+        self.assertEqual(captured, [None, {"choice": "action"}, {}])
+
+    async def test_action_client_error_sets_error_status(self):
+        tool = RuntimeTool(
+            id="client_action",
+            name="客户端操作",
+            function_name="show_message",
+            type="client",
+        )
+        brain = WorkflowBrain(
+            AssistantConfig(
+                type="workflow",
+                graph={
+                    "specVersion": 3,
+                    "settings": {},
+                    "nodes": [
+                        {"id": "start", "type": "start", "data": {}},
+                        {
+                            "id": "action",
+                            "type": "action",
+                            "data": {"toolId": "client_action"},
+                        },
+                    ],
+                    "edges": [],
+                },
+                tools=[tool],
+            )
+        )
+
+        async def execute(_tool, _arguments, *, result_assignments=None):
+            return {
+                "status": "error",
+                "message": "用户关闭了确认弹窗",
+                "updated_variables": [],
+            }
+
+        brain._runtime = BrainRuntime(
+            context=LLMContext(messages=[]),
+            llm=FakeLLM(),
+            queue_frame=noop_queue_frame,
+            set_system_prompt=lambda _prompt: None,
+            set_tools=lambda _tools: None,
+            call_end=FakeCallEnd(),
+        )
+        brain._tools.execute = execute
+
+        await brain._enter_action("action")
+
+        self.assertEqual(brain._store.values["system__last_action_status"], "error")
+        self.assertEqual(
+            brain._store.values["system__last_action_error"],
+            "用户关闭了确认弹窗",
+        )
+
+    async def test_action_block_policy_only_suppresses_input_while_running(self):
+        tool = RuntimeTool(
+            id="client_action",
+            name="客户端操作",
+            function_name="show_message",
+            type="client",
+        )
+        brain = WorkflowBrain(
+            AssistantConfig(
+                type="workflow",
+                graph={
+                    "specVersion": 3,
+                    "settings": {},
+                    "nodes": [
+                        {"id": "start", "type": "start", "data": {}},
+                        {
+                            "id": "block_action",
+                            "type": "action",
+                            "data": {
+                                "toolId": "client_action",
+                                "userInputPolicy": "block",
+                            },
+                        },
+                        {
+                            "id": "queue_action",
+                            "type": "action",
+                            "data": {
+                                "toolId": "client_action",
+                                "userInputPolicy": "queue",
+                            },
+                        },
+                    ],
+                    "edges": [],
+                },
+                tools=[tool],
+            )
+        )
+        input_states = []
+
+        async def execute(_tool, _arguments, *, result_assignments=None):
+            input_states.append("executing")
+            return {"status": "ok", "updated_variables": []}
+
+        brain._runtime = BrainRuntime(
+            context=LLMContext(messages=[]),
+            llm=FakeLLM(),
+            queue_frame=noop_queue_frame,
+            set_system_prompt=lambda _prompt: None,
+            set_tools=lambda _tools: None,
+            call_end=FakeCallEnd(),
+            set_input_enabled=input_states.append,
+        )
+        brain._tools.execute = execute
+
+        await brain._enter_action("block_action")
+        self.assertEqual(input_states, [False, "executing", True])
+
+        input_states.clear()
+        await brain._enter_action("queue_action")
+        self.assertEqual(input_states, ["executing"])
+
     async def test_nodes_without_outgoing_edges_remain_active(self):
         queued = []
 
diff --git a/backend/tests/test_workflow_v3.py b/backend/tests/test_workflow_v3.py
index 5013a1f..6d1e263 100644
--- a/backend/tests/test_workflow_v3.py
+++ b/backend/tests/test_workflow_v3.py
@@ -92,6 +92,60 @@ class WorkflowGraphTests(unittest.TestCase):
         agent["data"]["entrySpeech"] = "您好，{{customer}}"
         self.assertEqual(validate_graph(normalized), [])
 
+    def test_action_defaults_preserve_legacy_result_assignment_behavior(self):
+        graph = valid_graph()
+        graph["nodes"].extend(
+            [
+                {
+                    "id": "legacy_override",
+                    "type": "action",
+                    "data": {"resultAssignments": {"status": "order.status"}},
+                },
+                {"id": "legacy_none", "type": "action", "data": {}},
+                {
+                    "id": "explicit_inherit",
+                    "type": "action",
+                    "data": {"resultAssignmentMode": "inherit"},
+                },
+            ]
+        )
+
+        normalized = normalize_graph(graph)
+        actions = {
+            node["id"]: node["data"]
+            for node in normalized["nodes"]
+            if node["type"] == "action"
+        }
+
+        self.assertEqual(
+            actions["legacy_override"]["resultAssignmentMode"], "override"
+        )
+        self.assertEqual(actions["legacy_none"]["resultAssignmentMode"], "none")
+        self.assertEqual(
+            actions["explicit_inherit"]["resultAssignmentMode"], "inherit"
+        )
+        self.assertEqual(actions["legacy_none"]["resultAssignments"], {})
+        self.assertEqual(actions["legacy_none"]["userInputPolicy"], "queue")
+
+    def test_action_advanced_settings_are_validated(self):
+        graph = valid_graph()
+        graph["nodes"].append(
+            {
+                "id": "action",
+                "type": "action",
+                "data": {
+                    "resultAssignmentMode": "unexpected",
+                    "resultAssignments": [],
+                    "userInputPolicy": "cancel",
+                },
+            }
+        )
+        errors = validate_graph(graph)
+
+        self.assertTrue(any("结果变量模式无效" in error for error in errors))
+        self.assertTrue(any("结果变量映射必须是对象" in error for error in errors))
+        self.assertTrue(any("用户输入策略无效" in error for error in errors))
+
     def test_voice_resource_creates_isolated_runtime_config(self):
         base = AssistantConfig(type="workflow", asr="default", voice="default")
         asr = RuntimeModelResource(
diff --git a/frontend/src/components/assistant-editor/dynamic-variables.tsx b/frontend/src/components/assistant-editor/dynamic-variables.tsx
index 3f78bdd..5314f68 100644
--- a/frontend/src/components/assistant-editor/dynamic-variables.tsx
+++ b/frontend/src/components/assistant-editor/dynamic-variables.tsx
@@ -26,7 +26,10 @@ import {
   TabsList,
   TabsTrigger,
 } from "@/components/ui/tabs";
-import type { WorkflowGraph } from "@/components/workflow/specs";
+import {
+  actionResultAssignmentMode,
+  type WorkflowGraph,
+} from "@/components/workflow/specs";
 import type { DynamicVariableDefinition } from "@/lib/api";
 
 const DYNAMIC_VARIABLE_PATTERN = /{{\s*([A-Za-z][A-Za-z0-9_]{0,63})\s*}}/g;
@@ -93,6 +96,12 @@ export function activeWorkflowDynamicVariableDefinitions(
     }
   }
   for (const node of graph.nodes) {
+    if (
+      node.type === "action" &&
+      actionResultAssignmentMode(node.data) !== "override"
+    ) {
+      continue;
+    }
     for (const name of Object.keys(node.data.resultAssignments ?? {})) {
       if (isPublicDynamicVariableName(name)) names.add(name);
     }
diff --git a/frontend/src/components/pages/ComponentsToolsPage.tsx b/frontend/src/components/pages/ComponentsToolsPage.tsx
index af93c3b..d5c40fa 100644
--- a/frontend/src/components/pages/ComponentsToolsPage.tsx
+++ b/frontend/src/components/pages/ComponentsToolsPage.tsx
@@ -955,7 +955,8 @@ function ClientToolFields({
             成功后更新动态变量
           </div>
           <div className="mt-0.5 text-xs text-muted-foreground">
-            只在客户端返回 status=ok 时应用结果映射
+            只在客户端返回 status=ok 时应用；Action
+            节点默认继承，也可单独覆盖或禁用
           </div>
         </div>
         <Switch
@@ -1065,7 +1066,8 @@ function ToolRuntimeFields({
       <div>
         <div className="text-sm font-medium text-foreground">运行策略</div>
         <div className="mt-1 text-xs leading-5 text-muted-foreground">
-          执行模式决定 Agent 是否等待结果；中断设置决定执行期间及随后播报是否接收用户插话。
+          仅用于 Agent 主动调用工具时的对话行为；Workflow Action
+          节点使用自己的用户输入策略。
         </div>
       </div>
       <Field label="执行模式">
@@ -1088,7 +1090,7 @@ function ToolRuntimeFields({
         <div>
           <div className="text-sm font-medium text-foreground">允许用户打断</div>
           <div className="mt-0.5 text-xs text-muted-foreground">
-            关闭后，工具运行和紧随其后的 Agent 播报期间会忽略用户输入
+            关闭后，Agent 工具运行和紧随其后的播报期间会忽略用户输入
           </div>
         </div>
         <Switch
diff --git a/frontend/src/components/workflow/WorkflowCanvas.tsx b/frontend/src/components/workflow/WorkflowCanvas.tsx
index 35c580f..5652e3e 100644
--- a/frontend/src/components/workflow/WorkflowCanvas.tsx
+++ b/frontend/src/components/workflow/WorkflowCanvas.tsx
@@ -70,6 +70,12 @@ function defaultNodeData(spec: RuntimeNodeSpec): WorkflowNodeData {
           entryMode: "wait_user",
           entrySpeech: "",
         }
+      : spec.type === "action"
+        ? {
+            arguments: {},
+            resultAssignmentMode: "inherit",
+            userInputPolicy: "queue",
+          }
       : {}),
   };
   for (const field of spec.fields) {
diff --git a/frontend/src/components/workflow/panels/ActionNodePanel.tsx b/frontend/src/components/workflow/panels/ActionNodePanel.tsx
index cece73c..3f586f8 100644
--- a/frontend/src/components/workflow/panels/ActionNodePanel.tsx
+++ b/frontend/src/components/workflow/panels/ActionNodePanel.tsx
@@ -6,7 +6,11 @@ import { SectionCard } from "@/components/editor/section-card";
 import { Textarea } from "@/components/ui/textarea";
 
 import { NodeSelect } from "./controls";
-import type { WorkflowNodeData } from "../specs";
+import {
+  actionResultAssignmentMode,
+  actionUserInputPolicy,
+  type WorkflowNodeData,
+} from "../specs";
 import type { ModelOption } from "../types";
 
 type ActionNodePanelProps = {
@@ -32,11 +36,14 @@ export function ActionNodePanel({
   setAssignmentsJson,
   commitActionJson,
 }: ActionNodePanelProps) {
+  const resultAssignmentMode = actionResultAssignmentMode(draft);
+  const userInputPolicy = actionUserInputPolicy(draft);
+
   return (
     <SectionCard
       icon={<Zap size={15} />}
       title="工具执行"
-      description="确定性调用工具，并将响应字段写入会话动态变量"
+      description="确定性调用工具，并控制结果写入及执行期间的用户输入"
     >
       <NodeSelect
         label="执行工具"
@@ -63,24 +70,60 @@ export function ActionNodePanel({
           字符串值可使用 {"{{variable}}"} 动态变量。
         </span>
       </label>
-      <label className="block">
-        <div className="mb-1.5 text-sm font-medium text-foreground">
-          结果变量映射 JSON
-        </div>
-        <Textarea
-          rows={4}
-          value={assignmentsJson}
-          onChange={(event) => {
-            const value = event.target.value;
-            setAssignmentsJson(value);
-            commitActionJson(argumentsJson, value);
-          }}
-          className="field-sizing-fixed min-h-28 resize-y border-hairline-strong bg-background font-mono text-xs text-foreground placeholder:text-muted-soft"
-        />
-        <span className="mt-1.5 block text-xs text-muted-foreground">
-          格式：变量名 → 响应 JSON Path。
-        </span>
-      </label>
+      <NodeSelect
+        label="结果变量更新"
+        value={resultAssignmentMode}
+        options={[
+          { value: "inherit", label: "继承工具高级设置" },
+          { value: "override", label: "使用节点自定义映射" },
+          { value: "none", label: "不更新动态变量" },
+        ]}
+        onChange={(value) =>
+          set("resultAssignmentMode", value || "inherit")
+        }
+        allowNone={false}
+      />
+      {resultAssignmentMode === "override" ? (
+        <label className="block">
+          <div className="mb-1.5 text-sm font-medium text-foreground">
+            结果变量映射 JSON
+          </div>
+          <Textarea
+            rows={4}
+            value={assignmentsJson}
+            onChange={(event) => {
+              const value = event.target.value;
+              setAssignmentsJson(value);
+              commitActionJson(argumentsJson, value);
+            }}
+            className="field-sizing-fixed min-h-28 resize-y border-hairline-strong bg-background font-mono text-xs text-foreground placeholder:text-muted-soft"
+          />
+          <span className="mt-1.5 block text-xs text-muted-foreground">
+            格式：变量名 → 响应 JSON Path；仅覆盖当前 Action。
+          </span>
+        </label>
+      ) : (
+        <p className="-mt-1 text-xs leading-5 text-muted-foreground">
+          {resultAssignmentMode === "inherit"
+            ? "使用所选工具高级设置中的动态变量赋值配置。"
+            : "工具执行结果不会写入会话动态变量。"}
+        </p>
+      )}
+      <NodeSelect
+        label="执行期间用户输入"
+        value={userInputPolicy}
+        options={[
+          { value: "queue", label: "允许输入并排队（默认）" },
+          { value: "block", label: "暂时禁止输入" },
+        ]}
+        onChange={(value) => set("userInputPolicy", value || "queue")}
+        allowNone={false}
+      />
+      <p className="-mt-1 text-xs leading-5 text-muted-foreground">
+        {userInputPolicy === "queue"
+          ? "用户输入会保留，Action 完成并进入后续节点后再处理。"
+          : "Action 执行期间忽略新的语音、文本和图片输入。"}
+      </p>
       {jsonError && (
         <p role="alert" className="text-xs text-destructive">
           {jsonError}
diff --git a/frontend/src/components/workflow/panels/NodeSettingsPanel.tsx b/frontend/src/components/workflow/panels/NodeSettingsPanel.tsx
index 096375f..d45faf4 100644
--- a/frontend/src/components/workflow/panels/NodeSettingsPanel.tsx
+++ b/frontend/src/components/workflow/panels/NodeSettingsPanel.tsx
@@ -52,8 +52,12 @@ export function NodeSettingsPanel({
     setDraft(next);
     onChange(next);
   };
-  const set = (key: string, val: unknown) =>
+  const set = (key: string, val: unknown) => {
+    if (key === "resultAssignmentMode" && val !== "override") {
+      setJsonError("");
+    }
     commit({ ...draft, [key]: val });
+  };
   const setPatch = (patch: Partial<WorkflowNodeData>) =>
     commit({ ...draft, ...patch });
   const commitActionJson = (
@@ -230,44 +234,17 @@ export function NodeSettingsPanel({
         )}
 
         {spec.type === "action" && (
-          <>
-            <NodeSelect
-              label="确定性执行工具"
-              value={(draft.toolId as string) || ""}
-              options={toolOptions}
-              onChange={(value) => set("toolId", value || "")}
-              noneLabel="请选择工具"
-            />
-            <div className="flex flex-col gap-2">
-              <label className="text-sm font-medium text-foreground">工具参数 JSON</label>
-              <Textarea
-                rows={5}
-                value={argumentsJson}
-                onChange={(event) => {
-                  const value = event.target.value;
-                  setArgumentsJson(value);
-                  commitActionJson(value, assignmentsJson);
-                }}
-                className="field-sizing-fixed min-h-32 resize-y border-hairline-strong bg-background text-foreground placeholder:text-muted-soft"
-              />
-              <span className="text-xs text-muted-soft">字符串值可使用 {"{{variable}}"} 动态变量。</span>
-            </div>
-            <div className="flex flex-col gap-2">
-              <label className="text-sm font-medium text-foreground">结果变量映射 JSON</label>
-              <Textarea
-                rows={4}
-                value={assignmentsJson}
-                onChange={(event) => {
-                  const value = event.target.value;
-                  setAssignmentsJson(value);
-                  commitActionJson(argumentsJson, value);
-                }}
-                className="field-sizing-fixed min-h-28 resize-y border-hairline-strong bg-background text-foreground placeholder:text-muted-soft"
-              />
-              <span className="text-xs text-muted-soft">格式：变量名 → 响应 JSON Path。</span>
-            </div>
-            {jsonError && <span className="text-xs text-destructive">{jsonError}</span>}
-          </>
+          <ActionNodePanel
+            draft={draft}
+            set={set}
+            toolOptions={toolOptions}
+            argumentsJson={argumentsJson}
+            assignmentsJson={assignmentsJson}
+            jsonError={jsonError}
+            setArgumentsJson={setArgumentsJson}
+            setAssignmentsJson={setAssignmentsJson}
+            commitActionJson={commitActionJson}
+          />
         )}
 
         {spec.type === "handoff" && (
diff --git a/frontend/src/components/workflow/specs.ts b/frontend/src/components/workflow/specs.ts
index ed1811c..ca6e977 100644
--- a/frontend/src/components/workflow/specs.ts
+++ b/frontend/src/components/workflow/specs.ts
@@ -10,6 +10,8 @@ export type WorkflowNodeType = "start" | "agent" | "action" | "handoff" | "end";
 export type ContextPolicy = "inherit" | "fresh";
 export type KnowledgeMode = "automatic" | "on_demand" | "disabled";
 export type AgentEntryMode = "wait_user" | "generate" | "fixed_speech";
+export type ActionResultAssignmentMode = "inherit" | "override" | "none";
+export type ActionUserInputPolicy = "queue" | "block";
 export type EdgeMode = "llm" | "expression" | "always";
 export type ExpressionOperator =
   | "eq"
@@ -44,7 +46,9 @@ export type WorkflowNodeData = {
   turnConfig?: TurnConfig;
   toolId?: string;
   arguments?: Record<string, unknown>;
+  resultAssignmentMode?: ActionResultAssignmentMode;
   resultAssignments?: Record<string, string>;
+  userInputPolicy?: ActionUserInputPolicy;
   targetType?: "ai" | "human" | "queue" | "phone";
   target?: string;
   message?: string;
@@ -52,6 +56,33 @@ export type WorkflowNodeData = {
   [key: string]: unknown;
 };
 
+/**
+ * Resolve how an Action writes tool results while preserving workflows saved
+ * before resultAssignmentMode existed. Those nodes explicitly passed an empty
+ * mapping at runtime, so an absent/empty mapping means "none", not "inherit".
+ */
+export function actionResultAssignmentMode(
+  data: WorkflowNodeData,
+): ActionResultAssignmentMode {
+  if (
+    data.resultAssignmentMode === "inherit" ||
+    data.resultAssignmentMode === "override" ||
+    data.resultAssignmentMode === "none"
+  ) {
+    return data.resultAssignmentMode;
+  }
+  return Object.keys(data.resultAssignments ?? {}).length > 0
+    ? "override"
+    : "none";
+}
+
+/** Older Action nodes allowed input to continue, which matches queue. */
+export function actionUserInputPolicy(
+  data: WorkflowNodeData,
+): ActionUserInputPolicy {
+  return data.userInputPolicy === "block" ? "block" : "queue";
+}
+
 export type ExpressionRule = {
   variable: string;
   operator: ExpressionOperator;