diff --git a/SerialTool/source/oscilloscope.cpp b/SerialTool/source/oscilloscope.cpp
index e2d9d89..27ae772 100644
--- a/SerialTool/source/oscilloscope.cpp
+++ b/SerialTool/source/oscilloscope.cpp
@@ -34,7 +34,6 @@ Oscilloscope::Oscilloscope(QWidget *parent)
     connect(&updataTimer, &QTimer::timeout, this, &Oscilloscope::timeUpdata);
 
     clear();
-    ui.channelList->setVisible(false);
 }
 
 Oscilloscope::~Oscilloscope()