diff --git a/vnpy/trader/ui/editor.py b/vnpy/trader/ui/editor.py
index 42d0ae38..050be6b9 100644
--- a/vnpy/trader/ui/editor.py
+++ b/vnpy/trader/ui/editor.py
@@ -8,6 +8,14 @@ class CodeEditor(QtWidgets.QMainWindow):
     """"""
     NEW_FILE_NAME = "Untitled"
 
+    _instance = None
+
+    def __new__(cls, *args, **kwargs):
+        """"""
+        if not cls._instance:
+            cls._instance = QtWidgets.QMainWindow.__new__(cls, *args, **kwargs)
+        return cls._instance
+
     def __init__(self, main_engine=None, event_engine=None):
         """"""
         super().__init__()
@@ -441,8 +449,6 @@ if __name__ == "__main__":
     from vnpy.trader.ui import create_qapp
 
     app = create_qapp()
-
     editor = CodeEditor()
     editor.show()
-
     app.exec_()
diff --git a/vnpy/trader/ui/ico/editor.ico b/vnpy/trader/ui/ico/editor.ico
index c0f1ae00..e886970f 100644
Binary files a/vnpy/trader/ui/ico/editor.ico and b/vnpy/trader/ui/ico/editor.ico differ
diff --git a/vnpy/trader/ui/mainwindow.py b/vnpy/trader/ui/mainwindow.py
index 1e95e097..2cad1a7b 100644
--- a/vnpy/trader/ui/mainwindow.py
+++ b/vnpy/trader/ui/mainwindow.py
@@ -143,7 +143,7 @@ class MainWindow(QtWidgets.QMainWindow):
             help_menu,
             "代码编辑",
             "editor.ico",
-            partial(self.open_widget, CodeEditor, "editor"),
+            partial(self.open_widget, CodeEditor, "editor")
         )
         self.add_toolbar_action(
             "代码编辑",