diff --git a/app/DataBase/hard_link.py b/app/DataBase/hard_link.py
index f93fc50..4927396 100644
--- a/app/DataBase/hard_link.py
+++ b/app/DataBase/hard_link.py
@@ -72,6 +72,11 @@ def get_image(content, thumb=False):
         return dat_image
 
 
+def close():
+    if DB:
+        DB.close()
+
+
 # 6b02292eecea118f06be3a5b20075afc_t
 
 if __name__ == '__main__':
diff --git a/app/DataBase/misc.py b/app/DataBase/misc.py
index 20e6e0e..29a5221 100644
--- a/app/DataBase/misc.py
+++ b/app/DataBase/misc.py
@@ -1,6 +1,7 @@
 import os.path
 import sqlite3
 import threading
+import time
 
 lock = threading.Lock()
 DB = None
@@ -33,7 +34,8 @@ def get_avatar_buffer(userName):
         lock.acquire(True)
         try:
             cursor.execute(sql, [userName])
-        except AttributeError:
+        except:
+            time.sleep(0.5)
             init_database()
         finally:
             cursor.execute(sql, [userName])
@@ -46,5 +48,11 @@ def get_avatar_buffer(userName):
     return None
 
 
+def close():
+    global DB
+    if DB:
+        DB.close()
+
+
 if __name__ == '__main__':
     get_avatar_buffer('wxid_al2oan01b6fn11')
diff --git a/app/DataBase/msg.py b/app/DataBase/msg.py
index 62ef993..ce6ca18 100644
--- a/app/DataBase/msg.py
+++ b/app/DataBase/msg.py
@@ -81,18 +81,14 @@ def get_message_by_num(username_, local_id):
 
 
 def close():
-    for db in DB:
-        db.close()
+    global DB
+    if DB:
+        DB.close()
 
 
 if __name__ == '__main__':
     msg_root_path = './Msg/'
     init_database()
-
-    # username = 'wxid_0o18ef858vnu22'
-    # result = get_messages(username)
-    # pprint(result)
-    # pprint(len(result))
     result = get_message_by_num('wxid_0o18ef858vnu22', 9999999)
     print(result)
     print(result[-1][0])
diff --git a/app/ui_pc/mainview.py b/app/ui_pc/mainview.py
index 0b53c97..e4e8b3d 100644
--- a/app/ui_pc/mainview.py
+++ b/app/ui_pc/mainview.py
@@ -15,7 +15,7 @@ from PyQt5.QtGui import QPixmap, QFont, QDesktopServices
 from PyQt5.QtWidgets import *
 
 from app import config
-from app.DataBase import msg, misc
+from app.DataBase import msg, misc, micro_msg, hard_link
 from app.ui_pc.Icon import Icon
 from . import mainwindow
 from .chat import ChatWindow
@@ -216,7 +216,10 @@ class MainWinController(QMainWindow, mainwindow.Ui_MainWindow):
     def close(self) -> bool:
         del self.listWidget
         del self.stackedWidget
+        misc.close()
         msg.close()
+        micro_msg.close()
+        hard_link.close()
         self.contact_window.close()
 
 
diff --git a/app/ui_pc/tool/pc_decrypt/pc_decrypt.py b/app/ui_pc/tool/pc_decrypt/pc_decrypt.py
index 19ca92e..b7c4eb3 100644
--- a/app/ui_pc/tool/pc_decrypt/pc_decrypt.py
+++ b/app/ui_pc/tool/pc_decrypt/pc_decrypt.py
@@ -7,9 +7,11 @@ from PyQt5.QtCore import pyqtSignal, QThread, QUrl, QFile, QIODevice, QTextStrea
 from PyQt5.QtGui import QDesktopServices
 from PyQt5.QtWidgets import QWidget, QMessageBox, QFileDialog
 
+from app.DataBase import msg, micro_msg, misc, hard_link
 from app.DataBase.merge import merge_databases
 from app.decrypt import get_wx_info, decrypt
 from app.log import logger
+from app.util import path
 from . import decryptUi
 
 
@@ -69,6 +71,14 @@ class DecryptControl(QWidget, decryptUi.Ui_Dialog):
                 self.lineEdit.setFocus()
                 self.checkBox.setChecked(True)
                 self.get_wxidSignal.emit(self.info['wxid'])
+                directory = os.path.join(path.wx_path(), self.info['wxid'])
+                if os.path.exists(directory):
+                    self.label_db_dir.setText(directory)
+                    self.wx_dir = directory
+                    self.checkBox_2.setChecked(True)
+                    self.ready = True
+                if self.ready:
+                    self.label_ready.setText('已就绪')
                 if self.wx_dir and os.path.exists(os.path.join(self.wx_dir)):
                     self.label_ready.setText('已就绪')
         except Exception as e:
@@ -87,7 +97,7 @@ class DecryptControl(QWidget, decryptUi.Ui_Dialog):
     def select_db_dir(self):
         directory = QFileDialog.getExistingDirectory(
             self, "选取微信文件保存目录——能看到Msg文件夹",
-            os.path.expanduser('~\Documents')
+            path.wx_path()
         )  # 起始路径
         db_dir = os.path.join(directory, 'Msg')
         if not os.path.exists(db_dir):
@@ -186,6 +196,11 @@ class DecryptThread(QThread):
         pass
 
     def run(self):
+        misc.close()
+        msg.close()
+        micro_msg.close()
+        hard_link.close()
+        QThread.sleep(1)
         # data.decrypt(self.db_path, self.key)
         output_dir = 'app/DataBase/Msg'
         try:
@@ -207,7 +222,7 @@ class DecryptThread(QThread):
         self.maxNumSignal.emit(len(tasks))
         for i, task in enumerate(tasks):
             decrypt.decrypt(*task)
-            self.signal.emit(str(i + 1))
+            self.signal.emit(str(i))
         # print(self.db_path)
         self.okSignal.emit('ok')
         # self.signal.emit('100')
diff --git a/app/util/path.py b/app/util/path.py
index a9819f0..13129b4 100644
--- a/app/util/path.py
+++ b/app/util/path.py
@@ -1,4 +1,5 @@
 import os
+import winreg
 
 from app.person_pc import MePC
 from app.util import dat2pic
@@ -17,3 +18,24 @@ def get_abs_path(path):
         return output_path if output_path else ':/icons/icons/404.png'
     else:
         return ':/icons/icons/404.png'
+
+
+def wx_path():
+    ## 获取当前用户名
+    users = os.path.expandvars('$HOMEPATH')
+    ## 找到3ebffe94.ini配置文件
+    f = open(r'C:' + users + '\\AppData\\Roaming\\Tencent\\WeChat\\All Users\\config\\3ebffe94.ini')
+    txt = f.read()
+    f.close()
+    # 打开Windows注册表
+    reg_key = winreg.OpenKey(winreg.HKEY_CURRENT_USER,
+                             "Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders")
+    # 获取“我的文档”路径的注册表键值
+    documents_path_value = winreg.QueryValueEx(reg_key, "Personal")
+    # 输出路径
+    ##读取文件将路径放到wx_location变量里
+    if txt == 'MyDocument:':
+        wx_location = documents_path_value[0] + '\WeChat Files'
+    else:
+        wx_location = txt + "\WeChat Files"
+    return wx_location