diff --git a/PyPI/setup.cfg b/PyPI/setup.cfg
index 68a28ce..27fc556 100644
--- a/PyPI/setup.cfg
+++ b/PyPI/setup.cfg
@@ -1,7 +1,7 @@
 [metadata]
 # replace with your username:
 name = guan
-version = 0.1.20
+version = 0.1.21
 author = guanjihuan
 author_email = guanjihuan@163.com
 description = An open source python package
diff --git a/PyPI/src/guan.egg-info/PKG-INFO b/PyPI/src/guan.egg-info/PKG-INFO
index bc5a8ce..683d6ca 100644
--- a/PyPI/src/guan.egg-info/PKG-INFO
+++ b/PyPI/src/guan.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.1
 Name: guan
-Version: 0.1.20
+Version: 0.1.21
 Summary: An open source python package
 Home-page: https://py.guanjihuan.com
 Author: guanjihuan
diff --git a/PyPI/src/guan/__init__.py b/PyPI/src/guan/__init__.py
index c15d671..12b0bda 100644
--- a/PyPI/src/guan/__init__.py
+++ b/PyPI/src/guan/__init__.py
@@ -15,6 +15,5 @@ from .file_processing import *
 from .data_processing import *
 
 import guan
-rand_number = guan.get_random_number(start=1, end=10)
-if rand_number == 5:
-    guan.notification_of_upgrade()
\ No newline at end of file
+guan.notification_of_upgrade()
+global_variable_of_first_guan_package_calling = True
\ No newline at end of file
diff --git a/PyPI/src/guan/data_processing.py b/PyPI/src/guan/data_processing.py
index eb89c63..c1eb902 100644
--- a/PyPI/src/guan/data_processing.py
+++ b/PyPI/src/guan/data_processing.py
@@ -385,24 +385,27 @@ def get_mac_address():
 
 # Guan软件包的使用统计（不涉及到用户的个人数据）
 def statistics_of_guan_package():
-    try:
-        import guan
-        message_calling = guan.get_calling_function_name(layer=3)
-        if message_calling == '<module>':
-            import socket
-            datetime_date = guan.get_date()
-            datetime_time = guan.get_time()
-            current_version = guan.get_current_version('guan')
-            client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-            client_socket.settimeout(0.5)
-            client_socket.connect(('py.guanjihuan.com', 12345))
-            mac_address = guan.get_mac_address()
-            message = guan.get_calling_function_name(layer=2)
-            send_message = datetime_date + ' ' + datetime_time + ' version_'+current_version + ' MAC_address: '+mac_address+' guan.' + message+'\n'
-            client_socket.send(send_message.encode())
-            client_socket.close()
-    except:
-        pass
+    global global_variable_of_first_guan_package_calling
+    if global_variable_of_first_guan_package_calling == True:
+        global_variable_of_first_guan_package_calling = False
+        try:
+            import guan
+            message_calling = guan.get_calling_function_name(layer=3)
+            if message_calling == '<module>':
+                import socket
+                datetime_date = guan.get_date()
+                datetime_time = guan.get_time()
+                current_version = guan.get_current_version('guan')
+                client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+                client_socket.settimeout(0.5)
+                client_socket.connect(('py.guanjihuan.com', 12345))
+                mac_address = guan.get_mac_address()
+                message = guan.get_calling_function_name(layer=2)
+                send_message = datetime_date + ' ' + datetime_time + ' version_'+current_version + ' MAC_address: '+mac_address+' guan.' + message+'\n'
+                client_socket.send(send_message.encode())
+                client_socket.close()
+        except:
+            pass
 
 # 获取Python软件包的最新版本
 def get_latest_version(package_name='guan', timeout=0.5):
@@ -430,12 +433,15 @@ def get_current_version(package_name='guan'):
 
 # Guan软件包升级提示
 def notification_of_upgrade(timeout=0.5):
-    try:
-        import guan
-        latest_version = guan.get_latest_version(package_name='guan', timeout=timeout)
-        current_version = guan.get_current_version('guan')
-        if latest_version != None and current_version != None:
-            if latest_version != current_version:
-                print('提示：您当前使用的版本是 guan-'+current_version+'，目前已经有最新版本 guan-'+latest_version+'。您可以通过以下命令对软件包进行升级：pip install --upgrade guan')
-    except:
-        pass
\ No newline at end of file
+    import guan
+    rand_number = guan.get_random_number(start=1, end=10)
+    if rand_number == 5:
+        try:
+            import guan
+            latest_version = guan.get_latest_version(package_name='guan', timeout=timeout)
+            current_version = guan.get_current_version('guan')
+            if latest_version != None and current_version != None:
+                if latest_version != current_version:
+                    print('提示：您当前使用的版本是 guan-'+current_version+'，目前已经有最新版本 guan-'+latest_version+'。您可以通过以下命令对软件包进行升级：pip install --upgrade guan')
+        except:
+            pass
\ No newline at end of file