diff --git a/monitor.py b/monitor.py
index 707f825..902c9dc 100644
--- a/monitor.py
+++ b/monitor.py
@@ -269,6 +269,16 @@ class MessageMonitor:
                 pass
             self._emergency_thread.join(timeout=2)
             self._emergency_thread = None
+        # 杀死 EasyOCR 子进程（防止 GPU 推理残留吃资源/冻电脑）
+        try:
+            if self._easyocr_proc and self._easyocr_proc.poll() is None:
+                self._easyocr_proc.kill()
+                self._easyocr_proc.wait(timeout=3)
+                logger.info("[stop] EasyOCR 子进程已杀死")
+        except Exception as e:
+            logger.debug(f"[stop] 杀 EasyOCR 异常: {e}")
+        self._easyocr_proc = None
+
         # 释放钩子回调引用（防止 GC 延迟导致卸载后崩溃）
         if hasattr(self, '_esc_hook_proc'):
             del self._esc_hook_proc
@@ -3519,8 +3529,13 @@ class MessageMonitor:
             if re.match(r'^/[A-Za-z]', ts):
                 logger.debug(f"[{platform}] Poll过滤: 斜线英文命令 ts={ts!r}")
                 continue
-            # === OCR 误读斜线为 I/J："/sdfl"→"Isdfl", "/import"→"Jimport" ===
-            if re.match(r'^[A-Za-z]', ts) and ('sdfl' in ts.lower() or 'sdf1' in ts.lower()):
+            # === 下划线+斜线：OCR 左对齐气泡残影 "_ /sdfl undo" ===
+            if re.match(r'^_[ /]', ts):
+                logger.debug(f"[{platform}] Poll过滤: 下划线斜线残影 ts={ts!r}")
+                continue
+            # === OCR 误读斜线为 I/J："/sdfl"→"Isdfl", "_ /sdfl"→下划线前缀 ===
+            # 常见变体：/sdfl, _ /sdfl, Isdfl, sdfl undo...
+            if 'sdfl' in ts.lower() or 'sdf1' in ts.lower():
                 logger.debug(f"[{platform}] Poll过滤: 变形命令(sdfl) ts={ts!r}")
                 continue
             if re.match(r'^[A-Z][a-z]{4,}', ts) and re.search(r'[\u4e00-\u9fff]', ts) and len(ts) > 10: