diff --git a/WeaselTSF/dllmain.cpp b/WeaselTSF/dllmain.cpp
index ad9f81a9d..212eea105 100644
--- a/WeaselTSF/dllmain.cpp
+++ b/WeaselTSF/dllmain.cpp
@@ -1,15 +1,70 @@
 // dllmain.cpp : Defines the entry point for the DLL application.
 #include "stdafx.h"
 #include "Globals.h"
+#include <stdio.h>
+#include <Windows.h>
+#include <DbgHelp.h>
+#include <tchar.h>
+#include <time.h>
+#pragma comment(lib, "DbgHelp.lib")
+
+LONG WINAPI _UnhandledExceptionFilter(EXCEPTION_POINTERS* pExceptionPointers) {
+  TCHAR szFileName[MAX_PATH];
+  TCHAR szAppName[MAX_PATH];
+  TCHAR szDllName[MAX_PATH];
+  DWORD dwProcessId = GetCurrentProcessId();
+  SYSTEMTIME st;
+  TCHAR szDateTime[20];  // 用于存储日期时间字符串
+  // 获取当前系统时间
+  GetLocalTime(&st);
+  // 格式化日期时间字符串
+  _stprintf_s(szDateTime, 20, _T("%04d%02d%02d-%02d%02d%02d"), st.wYear,
+              st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond);
+  // 获取应用程序名称
+  GetModuleFileName(NULL, szAppName, MAX_PATH);
+  // 从完整路径中提取应用程序名称
+  TCHAR* pszBaseName = _tcsrchr(szAppName, '\\');
+  if (pszBaseName) {
+    pszBaseName++;  // 移过 '\\'
+  } else {
+    pszBaseName = szAppName;
+  }
+  // 获取当前dll模块的文件名
+  GetModuleFileName(g_hInst, szDllName, MAX_PATH);
+  TCHAR* pszDllBaseName = _tcsrchr(szDllName, '\\');
+  if (pszDllBaseName) {
+    pszDllBaseName++;  // 移过 '\\'
+  } else {
+    pszDllBaseName = szDllName;
+  }
+  WCHAR _path[MAX_PATH] = {0};
+  // default location
+  ExpandEnvironmentStringsW(L"%TEMP%\\rime.weasel", _path, _countof(_path));
+  // 构造 dump 文件名：应用程序名称-DLL名称-时间.进程号.dmp
+  _stprintf_s(szFileName, MAX_PATH, _T("%s\\%s-%s-%s.%lu.dmp"), _path,
+              pszBaseName, pszDllBaseName, szDateTime, dwProcessId);
+  HANDLE hDumpFile = CreateFile(szFileName, GENERIC_WRITE, 0, NULL,
+                                CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+  if (hDumpFile != INVALID_HANDLE_VALUE) {
+    MINIDUMP_EXCEPTION_INFORMATION dumpInfo;
+    dumpInfo.ExceptionPointers = pExceptionPointers;
+    dumpInfo.ThreadId = GetCurrentThreadId();
+    dumpInfo.ClientPointers = TRUE;
+    MiniDumpWriteDump(GetCurrentProcess(), dwProcessId, hDumpFile,
+                      MiniDumpNormal, &dumpInfo, NULL, NULL);
+    CloseHandle(hDumpFile);
+  }
+  return EXCEPTION_EXECUTE_HANDLER;
+}
 
 BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID pvReserved) {
   switch (dwReason) {
     case DLL_PROCESS_ATTACH:
       g_hInst = hInstance;
+      SetUnhandledExceptionFilter(_UnhandledExceptionFilter);
       if (!InitializeCriticalSectionAndSpinCount(&g_cs, 0))
         return FALSE;
       break;
-
     case DLL_PROCESS_DETACH:
       DeleteCriticalSection(&g_cs);
       break;