diff --git a/sender_ui.py b/sender_ui.py
index 160c621..cdb0244 100644
--- a/sender_ui.py
+++ b/sender_ui.py
@@ -53,13 +53,6 @@ class Ui_MainWindow(object):
         self.mode_box = QtWidgets.QComboBox(self.centralwidget)
         self.mode_box.setGeometry(QtCore.QRect(560, 200, 121, 41))
         self.mode_box.setObjectName("mode_box")
-        self.key_generate_button = QtWidgets.QPushButton(self.centralwidget)
-        self.key_generate_button.setGeometry(QtCore.QRect(560, 10, 121, 51))
-        self.key_generate_button.setAutoDefault(False)
-        self.key_generate_button.setObjectName("key_generate_button")
-        self.send_public_button = QtWidgets.QPushButton(self.centralwidget)
-        self.send_public_button.setGeometry(QtCore.QRect(560, 60, 121, 51))
-        self.send_public_button.setObjectName("send_public_button")
         self.envelope_button = QtWidgets.QPushButton(self.centralwidget)
         self.envelope_button.setGeometry(QtCore.QRect(560, 290, 121, 51))
         self.envelope_button.setObjectName("envelope_button")
@@ -72,8 +65,6 @@ class Ui_MainWindow(object):
         self.statusbar.setObjectName("statusbar")
         MainWindow.setStatusBar(self.statusbar)
         self.retranslateUi(MainWindow)
-        self.key_generate_button.clicked.connect(self.key_generate) # type: ignore
-        self.send_public_button.clicked.connect(self.send_publickey) # type: ignore
         self.choose_button.clicked.connect(self.choose_file) # type: ignore
         self.enbutton.clicked.connect(self.encrypt) # type: ignore
         self.envelope_button.clicked.connect(self.send) # type: ignore
@@ -95,12 +86,15 @@ class Ui_MainWindow(object):
         self.mode=""
         self.algorithm=""
         self.encrypted_text=""
-        with open("public_key.pem","rb") as f:
-            self.public_key=crypto.load_publickey(crypto.FILETYPE_PEM,f.read(),password=None)
-        with open("private_key.pem","rb") as f:
-            self.private_key=crypto.load_privatekey(crypto.FILETYPE_PEM,f.read(),password=None)
-        with open("public_key_other.pem","rb") as f:
-            self.public_key_other=crypto.load_publickey(crypto.FILETYPE_PEM,f.read(),password=None)
+        path = QFileDialog.getOpenFileName()[0]
+        with open(path,"rb") as f:
+            self.public_key=crypto.load_publickey(crypto.FILETYPE_PEM,f.read())
+        path = QFileDialog.getOpenFileName()[0]
+        with open(path,"rb") as f:
+            self.private_key=crypto.load_privatekey(crypto.FILETYPE_PEM,f.read())
+        path = QFileDialog.getOpenFileName()[0]
+        with open(path,"rb") as f:
+            self.public_key_other=crypto.load_publickey(crypto.FILETYPE_PEM,f.read())
         self.key=""
         self.envelope={}
         #等待接收方连接
@@ -110,8 +104,6 @@ class Ui_MainWindow(object):
         MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
         self.enbutton.setText(_translate("MainWindow", "加密并封装"))
         self.choose_button.setText(_translate("MainWindow", "选择文件"))
-        self.key_generate_button.setText(_translate("MainWindow", "生成公私钥"))
-        self.send_public_button.setText(_translate("MainWindow", "发送公钥"))
         self.envelope_button.setText(_translate("MainWindow", "发送"))
         self.mode_box.addItems(["ECB", "CBC"])
         self.algorithm_box.addItems(["AES","SM4"])