diff --git a/bandizip_patcher.py b/bandizip_patcher.py
index c3441ea..28610dc 100644
--- a/bandizip_patcher.py
+++ b/bandizip_patcher.py
@@ -27,13 +27,53 @@ import shutil
 import winreg
 
 # ============ 配置 ============
-BANDIZIP_DIR = r'D:\Apps\Bandizip'
-EXE_PATH = os.path.join(BANDIZIP_DIR, 'Bandizip.exe')
-BACKUP_PATH = EXE_PATH + '.bak'
 REG_KEY = r'SOFTWARE\Bandizip'
 REG_VALUE = 'Edition'
 REG_DATA = 'PRO'
 
+
+def find_bandizip_dir():
+    """自动查找 Bandizip 安装目录"""
+    # 方法1: 注册表 HKLM\SOFTWARE\Bandizip\ProgramFolder
+    try:
+        with winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, REG_KEY) as key:
+            path, _ = winreg.QueryValueEx(key, 'ProgramFolder')
+            if path and os.path.exists(os.path.join(path, 'Bandizip.exe')):
+                return path.rstrip('\\')
+    except Exception:
+        pass
+
+    # 方法2: 注册表卸载信息
+    for subkey in [r'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Bandizip',
+                   r'SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Bandizip']:
+        try:
+            with winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, subkey) as key:
+                loc, _ = winreg.QueryValueEx(key, 'InstallLocation')
+                if loc and os.path.exists(os.path.join(loc, 'Bandizip.exe')):
+                    return loc.rstrip('\\')
+        except Exception:
+            pass
+
+    # 方法3: 常见安装路径
+    common_paths = [
+        os.path.join(os.environ.get('ProgramFiles', r'C:\Program Files'), 'Bandizip'),
+        os.path.join(os.environ.get('ProgramFiles(x86)', r'C:\Program Files (x86)'), 'Bandizip'),
+        os.path.join(os.environ.get('LOCALAPPDATA', ''), 'Programs', 'Bandizip'),
+        r'D:\Apps\Bandizip',
+        r'D:\Program Files\Bandizip',
+    ]
+    for p in common_paths:
+        if os.path.exists(os.path.join(p, 'Bandizip.exe')):
+            return p
+
+    return None
+
+
+# 启动时自动检测（可通过环境变量 BANDIZIP_DIR 手动覆盖）
+BANDIZIP_DIR = os.environ.get('BANDIZIP_DIR') or find_bandizip_dir()
+EXE_PATH = os.path.join(BANDIZIP_DIR, 'Bandizip.exe') if BANDIZIP_DIR else None
+BACKUP_PATH = (EXE_PATH + '.bak') if EXE_PATH else None
+
 # Patch 定义: (文件偏移, 原始字节, 补丁字节, 描述)
 PATCHES = [
     (0xD0CF0,  b'\x48\x89\x5C\x24\x08\x55', b'\xB0\x01\xC3',
@@ -176,10 +216,13 @@ def check_status():
     print('=' * 50)
 
     # 文件存在
-    if os.path.exists(EXE_PATH):
+    if EXE_PATH and os.path.exists(EXE_PATH):
         print('  [OK] Bandizip.exe found: ' + EXE_PATH)
     else:
-        print('  [!] Bandizip.exe not found: ' + EXE_PATH)
+        print('  [!] Bandizip.exe not found!')
+        print('  [!] Tried registry, uninstall info, and common paths.')
+        print('  [!] Please pass install dir manually:')
+        print('  [!]   set BANDIZIP_DIR=C:\\path\\to\\Bandizip')
         return
 
     # 备份状态
@@ -231,8 +274,8 @@ def do_patch():
     print('  Bandizip Patcher - Apply')
     print('=' * 50)
 
-    if not os.path.exists(EXE_PATH):
-        print('  [!] Bandizip.exe not found: ' + EXE_PATH)
+    if not EXE_PATH or not os.path.exists(EXE_PATH):
+        print('  [!] Bandizip.exe not found!')
         return False
 
     if is_bandizip_running():