diff --git a/frontend-web/src/core/auth/task-buttons.ts b/frontend-web/src/core/auth/task-buttons.ts
index e7f10d42..edc31642 100644
--- a/frontend-web/src/core/auth/task-buttons.ts
+++ b/frontend-web/src/core/auth/task-buttons.ts
@@ -59,6 +59,9 @@ export type TaskButtonLinkType = "url" | "business" | "purpose";
 /** 追加的 id 取哪种：``task``=任务id（默认）/ ``action``=行动id（仅 xdfx 二者不同）。 */
 export type TaskButtonIdKind = "task" | "action";
 
+/** ``url`` 外链打开方式：``blank``=新窗口（默认）/ ``self``=当前窗口（嵌入态即当前 iframe）。 */
+export type TaskButtonOpenMode = "blank" | "self";
+
 /** 一个可配置跳转按钮。 */
 export interface TaskButton {
   id: string;
@@ -76,6 +79,8 @@ export interface TaskButton {
    * 实为行动id，任务id 由 action 接口解析。其它业务两者相同。
    */
   idKind: TaskButtonIdKind;
+  /** ``url`` 外链打开方式：``blank``=新窗口（默认）/ ``self``=当前窗口。仅 ``url`` 类型有意义。 */
+  openMode: TaskButtonOpenMode;
   enabled: boolean;
   sortOrder: number;
 }
@@ -109,6 +114,7 @@ export function defaultTaskButtons(cfg: TaskDeeplinkConfig): TaskButton[] {
     appendTaskId: false,
     idParam: "id",
     idKind: "task",
+    openMode: "blank",
     enabled: true,
     sortOrder,
   });
@@ -122,6 +128,7 @@ export function defaultTaskButtons(cfg: TaskDeeplinkConfig): TaskButton[] {
     appendTaskId: false,
     idParam: "id",
     idKind: "task",
+    openMode: "blank",
     enabled: true,
     sortOrder,
   });
@@ -136,6 +143,7 @@ export function defaultTaskButtons(cfg: TaskDeeplinkConfig): TaskButton[] {
       appendTaskId: true,
       idParam: "id",
       idKind: "task",
+      openMode: "blank",
       enabled: true,
       sortOrder: 0,
     },
@@ -148,6 +156,7 @@ export function defaultTaskButtons(cfg: TaskDeeplinkConfig): TaskButton[] {
       appendTaskId: true,
       idParam: "id",
       idKind: "task",
+      openMode: "blank",
       enabled: true,
       sortOrder: 1,
     },
@@ -160,6 +169,7 @@ export function defaultTaskButtons(cfg: TaskDeeplinkConfig): TaskButton[] {
       appendTaskId: true,
       idParam: "id",
       idKind: "task",
+      openMode: "blank",
       enabled: true,
       sortOrder: 2,
     },
@@ -227,7 +237,12 @@ export async function runTaskButton(btn: TaskButton, ctx: RunTaskButtonCtx): Pro
     const id = btn.idKind === "action" ? ctx.actionId || ctx.taskId : ctx.taskId;
     const param = (btn.idParam || "id").trim() || "id";
     const url = btn.appendTaskId && id ? appendQueryParam(base, param, id) : base;
-    window.open(url, "_blank", "noopener,noreferrer");
+    // 打开方式：self=当前窗口（嵌入态即当前 iframe）；否则 blank=新窗口（默认）。
+    if (btn.openMode === "self") {
+      window.location.assign(url);
+    } else {
+      window.open(url, "_blank", "noopener,noreferrer");
+    }
     return;
   }
   // business：内部切换到另一业务
diff --git a/frontend-web/src/pages/TaskButtonsPage.tsx b/frontend-web/src/pages/TaskButtonsPage.tsx
index dfd5f47e..59d8373b 100644
--- a/frontend-web/src/pages/TaskButtonsPage.tsx
+++ b/frontend-web/src/pages/TaskButtonsPage.tsx
@@ -104,6 +104,7 @@ export default function TaskButtonsPage() {
         appendTaskId: true,
         idParam: "id",
         idKind: "task",
+        openMode: "blank",
         enabled: true,
         sortOrder: maxSort + 1,
       },
@@ -305,6 +306,19 @@ export default function TaskButtonsPage() {
                             )}
                           </div>
                         )}
+                        <label className="text-muted-foreground ml-2 shrink-0 text-xs">打开方式</label>
+                        <Select
+                          value={r.openMode}
+                          onValueChange={(v) => update(r.id, { openMode: v as TaskButton["openMode"] })}
+                        >
+                          <SelectTrigger className="h-8 w-32" title="外链打开方式">
+                            <SelectValue />
+                          </SelectTrigger>
+                          <SelectContent>
+                            <SelectItem value="blank">新窗口</SelectItem>
+                            <SelectItem value="self">当前窗口</SelectItem>
+                          </SelectContent>
+                        </Select>
                       </>
                     ) : (
                       <Select value={r.target} onValueChange={(v) => update(r.id, { target: v })}>
diff --git a/frontend-web/src/strategy-components/api/task-buttons.ts b/frontend-web/src/strategy-components/api/task-buttons.ts
index 4e651388..f92d9002 100644
--- a/frontend-web/src/strategy-components/api/task-buttons.ts
+++ b/frontend-web/src/strategy-components/api/task-buttons.ts
@@ -15,6 +15,7 @@ import type {
   TaskButton,
   TaskButtonIdKind,
   TaskButtonLinkType,
+  TaskButtonOpenMode,
 } from "@/core/auth/task-buttons";
 
 const BASE = () => `${getBackendBaseURL()}/api/task-buttons`;
@@ -28,6 +29,7 @@ interface ServerButton {
   append_task_id: boolean;
   id_param: string;
   id_kind: string;
+  open_mode: string;
   enabled: boolean;
   sort_order: number;
 }
@@ -42,6 +44,7 @@ function toButton(s: ServerButton): TaskButton {
     appendTaskId: s.append_task_id ?? true,
     idParam: s.id_param || "id",
     idKind: (s.id_kind as TaskButtonIdKind) ?? "task",
+    openMode: (s.open_mode as TaskButtonOpenMode) ?? "blank",
     enabled: s.enabled ?? true,
     sortOrder: s.sort_order ?? 0,
   };
@@ -57,6 +60,7 @@ function toBody(b: TaskButton): ServerButton {
     append_task_id: b.appendTaskId,
     id_param: b.idParam,
     id_kind: b.idKind,
+    open_mode: b.openMode,
     enabled: b.enabled,
     sort_order: b.sortOrder,
   };
diff --git a/offline-backend-20260512/backend/app/gateway/routers/task_buttons.py b/offline-backend-20260512/backend/app/gateway/routers/task_buttons.py
index 73b4f44e..d83e34b9 100644
--- a/offline-backend-20260512/backend/app/gateway/routers/task_buttons.py
+++ b/offline-backend-20260512/backend/app/gateway/routers/task_buttons.py
@@ -46,6 +46,8 @@ class TaskButton(BaseModel):
     id_param: str = Field(default="id", max_length=64)
     # task=任务id（默认）/ action=行动id（仅 xdfx 二者不同）。
     id_kind: str = Field(default="task", max_length=16)
+    # url 外链打开方式：blank=新窗口（默认）/ self=当前窗口。
+    open_mode: str = Field(default="blank", max_length=16)
     enabled: bool = True
     sort_order: int = 0
 
diff --git a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/memory.py b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/memory.py
index a775e169..92d6f0ca 100644
--- a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/memory.py
+++ b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/memory.py
@@ -18,6 +18,7 @@ def _normalize(data: dict[str, Any], updated_by: str | None) -> dict[str, Any]:
         "append_task_id": bool(data.get("append_task_id", True)),
         "id_param": str(data.get("id_param") or "id"),
         "id_kind": str(data.get("id_kind") or "task"),
+        "open_mode": str(data.get("open_mode") or "blank"),
         "enabled": bool(data.get("enabled", True)),
         "sort_order": int(data.get("sort_order", 0)),
         "updated_by": updated_by,
diff --git a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/model.py b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/model.py
index f68f413a..1f84f7c1 100644
--- a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/model.py
+++ b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/model.py
@@ -46,6 +46,8 @@ class TaskButtonRow(Base):
     # 追加的 id 取哪种：``task``=任务id（默认）/ ``action``=行动id（仅 xdfx 二者不同：深链原始
     # ?taskId= 实为行动id，任务id 由 action 接口解析）。可空，读时归一化为 ``task``。
     id_kind: Mapped[str | None] = mapped_column(String(16), default="task")
+    # ``url`` 外链打开方式：``blank``=新窗口（默认）/ ``self``=当前窗口。可空，读时归一化为 ``blank``。
+    open_mode: Mapped[str | None] = mapped_column(String(16), default="blank")
     enabled: Mapped[bool] = mapped_column(Boolean, default=True)
     sort_order: Mapped[int] = mapped_column(Integer, default=0)
     updated_by: Mapped[str | None] = mapped_column(String(64))
diff --git a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/sql.py b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/sql.py
index be498f1c..5326833f 100644
--- a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/sql.py
+++ b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/task_buttons/sql.py
@@ -20,6 +20,7 @@ def _to_dict(row: TaskButtonRow) -> dict[str, Any]:
     # 旧行 / NULL 归一化为默认值。
     data["id_param"] = data.get("id_param") or "id"
     data["id_kind"] = data.get("id_kind") or "task"
+    data["open_mode"] = data.get("open_mode") or "blank"
     return data
 
 
@@ -33,6 +34,7 @@ def _row_from(data: dict[str, Any], updated_by: str | None) -> TaskButtonRow:
         append_task_id=bool(data.get("append_task_id", True)),
         id_param=str(data.get("id_param") or "id"),
         id_kind=str(data.get("id_kind") or "task"),
+        open_mode=str(data.get("open_mode") or "blank"),
         enabled=bool(data.get("enabled", True)),
         sort_order=int(data.get("sort_order", 0)),
         updated_by=updated_by,