diff --git a/app/agent/__init__.py b/app/agent/__init__.py
index ac919e5e..28a8ec75 100644
--- a/app/agent/__init__.py
+++ b/app/agent/__init__.py
@@ -643,14 +643,20 @@ class MoviePilotAgent:
                     and not self._tool_context.get("user_reply_sent")
                 ):
                     if self.is_background:
-                        if self.persist_output_message:
-                            # 后台任务仅广播最终回复，带标题
-                            await self.send_agent_message(
-                                final_text, title="MoviePilot助手"
-                            )
+                        # 后台任务仅广播最终回复，带标题
+                        await self.send_agent_message(
+                            final_text, title="MoviePilot助手"
+                        )
                     else:
                         # 非流式渠道：发送最终回复
                         await self.send_agent_message(final_text)
+                elif (
+                    final_text
+                    and self.persist_output_message
+                    and not self._tool_context.get("user_reply_sent")
+                ):
+                    title = "MoviePilot助手" if self.is_background else ""
+                    await self._save_agent_message_to_db(final_text, title=title)
 
             # 保存消息
             memory_manager.save_agent_messages(
diff --git a/tests/test_agent_background_output.py b/tests/test_agent_background_output.py
index ab3b3674..771eba39 100644
--- a/tests/test_agent_background_output.py
+++ b/tests/test_agent_background_output.py
@@ -25,7 +25,7 @@ class _FakeAgent:
 
 
 class AgentBackgroundOutputTest(unittest.IsolatedAsyncioTestCase):
-    async def test_background_non_streaming_skips_send_when_output_persistence_disabled(self):
+    async def test_background_non_streaming_still_sends_when_reply_not_suppressed(self):
         agent = MoviePilotAgent(session_id="bg-test", user_id="system")
         agent.channel = None
         agent.source = None
@@ -41,11 +41,43 @@ class AgentBackgroundOutputTest(unittest.IsolatedAsyncioTestCase):
             [AIMessage(content="后台结果")]
         )
         agent.send_agent_message = AsyncMock()
+        agent._save_agent_message_to_db = AsyncMock()
+
+        with patch.object(memory_manager, "save_agent_messages") as save_messages:
+            await agent._execute_agent([])
+
+        agent.send_agent_message.assert_awaited_once_with(
+            "后台结果", title="MoviePilot助手"
+        )
+        agent._save_agent_message_to_db.assert_not_awaited()
+        save_messages.assert_called_once()
+        self.assertEqual("后台结果", agent._streamed_output)
+
+    async def test_background_non_streaming_persists_without_sending_when_reply_suppressed(self):
+        agent = MoviePilotAgent(session_id="bg-test", user_id="system")
+        agent.channel = None
+        agent.source = None
+        agent.suppress_user_reply = True
+        agent.persist_output_message = True
+        agent._tool_context = {"user_reply_sent": False}
+        agent._streamed_output = ""
+        agent.stream_handler = SimpleNamespace(
+            stop_streaming=AsyncMock(return_value=(False, ""))
+        )
+        agent._should_stream = lambda: False
+        agent._create_agent = lambda streaming=False: _FakeAgent(
+            [AIMessage(content="后台结果")]
+        )
+        agent.send_agent_message = AsyncMock()
+        agent._save_agent_message_to_db = AsyncMock()
 
         with patch.object(memory_manager, "save_agent_messages") as save_messages:
             await agent._execute_agent([])
 
         agent.send_agent_message.assert_not_awaited()
+        agent._save_agent_message_to_db.assert_awaited_once_with(
+            "后台结果", title="MoviePilot助手"
+        )
         save_messages.assert_called_once()
         self.assertEqual("后台结果", agent._streamed_output)