diff --git a/src/editor/inserttextundocommand.cpp b/src/editor/inserttextundocommand.cpp
index b02864ff..3ea8c1b8 100644
--- a/src/editor/inserttextundocommand.cpp
+++ b/src/editor/inserttextundocommand.cpp
@@ -44,7 +44,12 @@ void InsertTextUndoCommand::undo()
     } else {
         int cnt = m_ColumnEditSelections.size();
         for (int i = 0; i < cnt; i++) {
-            m_ColumnEditSelections[i].cursor.deleteChar();
+            QTextCursor &cursor = m_ColumnEditSelections[i].cursor;
+            int endPos = cursor.selectionEnd();
+            int startPos = endPos - m_sInsertText.length();
+            cursor.setPosition(startPos);
+            cursor.setPosition(endPos, QTextCursor::KeepAnchor);
+            cursor.deleteChar();
         }
 
         if (m_pEdit && !m_ColumnEditSelections.isEmpty()) {
@@ -76,7 +81,7 @@ void InsertTextUndoCommand::redo()
         int cnt = m_ColumnEditSelections.size();
         for (int i = 0; i < cnt; i++) {
             m_ColumnEditSelections[i].cursor.insertText(m_sInsertText);
-            m_ColumnEditSelections[i].cursor.setPosition(m_ColumnEditSelections[i].cursor.position() - m_sInsertText.length() + 1,
+            m_ColumnEditSelections[i].cursor.setPosition(m_ColumnEditSelections[i].cursor.position() - m_sInsertText.length(),
                                                          QTextCursor::KeepAnchor);
         }
 
@@ -88,6 +93,24 @@ void InsertTextUndoCommand::redo()
     }
 }
 
+int InsertTextUndoCommand::id() const
+{
+    return kColumnEditInsertCommandId;
+}
+
+bool InsertTextUndoCommand::mergeWith(const QUndoCommand *other)
+{
+    if (other->id() != id())
+        return false;
+
+    const auto *cmd = static_cast<const InsertTextUndoCommand *>(other);
+    if (m_ColumnEditSelections.isEmpty() || cmd->m_ColumnEditSelections.isEmpty())
+        return false;
+
+    m_sInsertText += cmd->m_sInsertText;
+    return true;
+}
+
 /**
  * @class MidButtonInsertTextUndoCommand
  * @brief 用于鼠标中键黏贴的插入撤销项，使用 QClipboard::Selection 类型插入选中的数据，
diff --git a/src/editor/inserttextundocommand.h b/src/editor/inserttextundocommand.h
index 393dc95c..7243a588 100644
--- a/src/editor/inserttextundocommand.h
+++ b/src/editor/inserttextundocommand.h
@@ -21,6 +21,8 @@ class InsertTextUndoCommand : public QUndoCommand
                                    QUndoCommand *parent = nullptr);
     virtual void undo();
     virtual void redo();
+    int id() const override;
+    bool mergeWith(const QUndoCommand *other) override;
 
 private:
     QPlainTextEdit *m_pEdit = nullptr;
@@ -30,6 +32,7 @@ class InsertTextUndoCommand : public QUndoCommand
     QString m_sInsertText;
     QList<QTextEdit::ExtraSelection> m_ColumnEditSelections;
     QString m_selectText = QString();
+    static constexpr int kColumnEditInsertCommandId = 1001;
 };
 
 /**