diff --git a/HTYEdit b/HTYEdit
index d966bc4..e3635b1 100644
Binary files a/HTYEdit and b/HTYEdit differ
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 3ef6c8c..dbcc578 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -184,7 +184,7 @@ void MainWindow::on_action_save_triggered()
         if (path == "") {
             on_action_saveas_triggered();
         } else {
-            MdiChild *child = (MdiChild*)(ui->mdiArea->currentSubWindow()->widget());            
+            MdiChild *child = (MdiChild*)(ui->mdiArea->currentSubWindow()->widget());
             if (child->save()) {
                 LS1->setText("保存 " + child->path);
             }
diff --git a/mdichild.cpp b/mdichild.cpp
index a1555a5..47ea194 100644
--- a/mdichild.cpp
+++ b/mdichild.cpp
@@ -11,7 +11,10 @@
 #include <QProcess>
 
 MdiChild::MdiChild()
-{    
+{
+    QFontMetrics FM(font());
+    int ts = 4;
+    setTabStopWidth(ts * FM.boundingRect("*").width());
     connect(document(),SIGNAL(contentsChanged()),this,SLOT(onContentsChanged()));
 }
 
@@ -63,7 +66,7 @@ bool MdiChild::loadFile(QString filename)
         Highlighter *highlighter = new Highlighter(document());
         Q_UNUSED(highlighter);
         showMaximized();
-        zoomIn(4);        
+        zoomIn(4);
         return true;
     }else{
         QMessageBox::warning(this,"错误", QString(" %1:\n%2").arg(path).arg(file->errorString()));