diff --git a/client-file-collector/client_file_collector.py b/client-file-collector/client_file_collector.py
index f4d64b1..ad37d24 100644
--- a/client-file-collector/client_file_collector.py
+++ b/client-file-collector/client_file_collector.py
@@ -134,6 +134,7 @@ class CollectorApp:
         self.log_queue = queue.Queue()
         self.running = False
         self.worker_thread = None
+        self.stop_event = threading.Event()
         self.active_rows = []
         self.upload_state = {}
         self.notice_ts = {}
@@ -392,8 +393,12 @@ class CollectorApp:
             return
 
         self.active_rows = rows
+        # 每次手动/自动启动都重置一次状态，避免停启后误判“已同步”。
+        self.upload_state = {}
+        self.notice_ts = {}
+        self.stop_event = threading.Event()
         self.running = True
-        self.worker_thread = threading.Thread(target=self._worker_loop, daemon=True)
+        self.worker_thread = threading.Thread(target=self._worker_loop, args=(self.stop_event,), daemon=True)
         self.worker_thread.start()
         if auto_mode:
             self.log("配置有效，已自动启动轮询同步。")
@@ -405,15 +410,16 @@ class CollectorApp:
             self.log("采集任务未运行。")
             return
         self.running = False
+        self.stop_event.set()
         self.log("正在停止采集任务...")
 
-    def _worker_loop(self):
-        while self.running:
+    def _worker_loop(self, stop_event):
+        while not stop_event.is_set():
             rows = list(self.active_rows)
             for row in rows:
-                if not self.running:
+                if stop_event.is_set():
                     break
-                self._sync_one_row(row)
+                self._sync_one_row(row, stop_event)
 
             try:
                 poll_seconds = int(self.poll_seconds_var.get().strip() or "10")
@@ -421,12 +427,15 @@ class CollectorApp:
                 poll_seconds = 10
 
             for _ in range(max(1, poll_seconds)):
-                if not self.running:
+                if stop_event.is_set():
                     break
                 time.sleep(1)
-        self.log("采集任务已停止。")
+        if self.stop_event is stop_event:
+            self.running = False
+            self.worker_thread = None
+            self.log("采集任务已停止。")
 
-    def _sync_one_row(self, row):
+    def _sync_one_row(self, row, stop_event):
         row_index = row["row_index"]
         source_path = row["source_path"]
         path_key = "row%d_missing" % row_index
@@ -442,13 +451,14 @@ class CollectorApp:
             if file_path.is_file():
                 files.append(file_path)
 
+        self._cleanup_row_upload_state(row_index, files)
         if not files:
             self._log_with_interval(empty_key, "第%d行目录为空，等待新文件..." % row_index, 60)
             return
 
         files.sort(key=lambda p: p.stat().st_mtime)
         for file_path in files:
-            if not self.running:
+            if stop_event.is_set():
                 return
             signature = self._file_signature(file_path)
             if signature is None:
@@ -460,10 +470,25 @@ class CollectorApp:
 
             if self._upload_file(row, file_path):
                 if self._backup_and_remove_file(row, file_path):
-                    self.upload_state[state_key] = signature
+                    # 文件已从源目录移走，立即清理状态，允许后续同名新文件再次同步。
+                    self.upload_state.pop(state_key, None)
                 else:
                     self.upload_state.pop(state_key, None)
 
+    def _cleanup_row_upload_state(self, row_index, files):
+        prefix = "%d|" % row_index
+        current_keys = set()
+        for file_path in files:
+            current_keys.add("%d|%s" % (row_index, str(file_path).lower()))
+
+        stale_keys = []
+        for key in self.upload_state.keys():
+            if key.startswith(prefix) and key not in current_keys:
+                stale_keys.append(key)
+
+        for key in stale_keys:
+            self.upload_state.pop(key, None)
+
     def _file_signature(self, file_path):
         try:
             stat = file_path.stat()
diff --git a/client-file-collector/dist/QMSFileCollector.exe b/client-file-collector/dist/QMSFileCollector.exe
index e4e740c..8f47cca 100644
Binary files a/client-file-collector/dist/QMSFileCollector.exe and b/client-file-collector/dist/QMSFileCollector.exe differ