diff --git a/MainWidget.cpp b/MainWidget.cpp
index 4f3166d..8b5855d 100644
--- a/MainWidget.cpp
+++ b/MainWidget.cpp
@@ -15,10 +15,14 @@ MainWidget::MainWidget(QWidget* parent) : QWidget(parent), ui(new Ui::MainWidget
 
     ui->edStatus->setEnabled(false);
     ui->btnSave->setEnabled(false);
+    ui->btnCopySelectLine->setEnabled(false);
+    ui->btnDelSelectLine->setEnabled(false);
 
     connect(ui->btnRead, &QPushButton::clicked, this, [&]() { read(); });
     connect(ui->btnSearch, &QPushButton::clicked, this, [&]() { search(); });
     connect(ui->btnSave, &QPushButton::clicked, this, [&]() { save(); });
+    connect(ui->btnCopySelectLine, &QPushButton::clicked, this, [&]() { copy_select_line(); });
+    connect(ui->btnDelSelectLine, &QPushButton::clicked, this, [&]() { del_select_line(); });
 }
 
 MainWidget::~MainWidget()
@@ -51,6 +55,8 @@ void MainWidget::generate_table_widget()
 
     tab_widget_->setColumnCount(list.size());
     tab_widget_->setHorizontalHeaderLabels(list);
+    tab_widget_->setSelectionBehavior(QAbstractItemView::SelectRows);
+    tab_widget_->setSelectionMode(QAbstractItemView::SelectionMode::SingleSelection);
 
     for (auto i = 0; i < keys.size(); ++i) {
         tab_widget_->setColumnWidth(i, width_[i]);
@@ -109,6 +115,8 @@ void MainWidget::read()
 
     ui->btnRead->setEnabled(false);
     ui->btnSave->setEnabled(true);
+    ui->btnCopySelectLine->setEnabled(true);
+    ui->btnDelSelectLine->setEnabled(true);
 }
 
 void MainWidget::search()
@@ -146,24 +154,72 @@ void MainWidget::item_changed_handle(QTableWidgetItem* item)
     int row = item->row();
     int col = item->column();
 
-    QString xml_key = tab_widget_->item(row, 0)->text();
-    for (const auto& ele : current_) {
-        const char* data = ele->Attribute(keys_[0].c_str());
-        QString     qdata(data);
-        if (qdata != xml_key) {
-            continue;
-        }
-        ele->SetAttribute(keys_[col].c_str(), item->text().toLocal8Bit().constData());
-        break;
+    QString  xml_key = tab_widget_->item(row, 0)->text();
+    element* result = get_element_bykey(xml_key);
+    if (result == nullptr) {
+        return;
     }
+    result->SetAttribute(keys_[col].c_str(), item->text().toLocal8Bit().constData());
 }
 
 void MainWidget::save()
 {
     if (xml_.save()) {
-        QMessageBox::information(this, u8"提示", u8"保存成功");
-    }
-    else {
-        QMessageBox::information(this, u8"提示", u8"保存失败");
+        CUtil::msg(this, u8"保存成功");
+    } else {
+        CUtil::msg(this, u8"保存失败");
     }
 }
+
+void MainWidget::copy_select_line()
+{
+    element* target = get_current_select_key();
+    if (target == nullptr) {
+        return;
+    }
+    element* newer = xml_.copy_element(target);
+    xml_.insert_brother_node(target, newer);
+
+    // TODO: 添加到界面
+    CUtil::msg(this, u8"已复制");
+}
+
+void MainWidget::del_select_line()
+{
+    element* target = get_current_select_key();
+    if (target == nullptr) {
+        return;
+    }
+}
+
+element* MainWidget::get_current_select_key()
+{
+    element* ret = nullptr;
+    if (tab_widget_ == nullptr) {
+        return ret;
+    }
+    QList<QTableWidgetItem*> selectedItems = tab_widget_->selectedItems();
+    if (selectedItems.size() < 1) {
+        CUtil::msg(this, u8"没有选中数据");
+        return ret;
+    }
+    QTableWidgetItem* item = selectedItems[0];
+    int               row = item->row();
+    ret = get_element_bykey(item->text());
+    return ret;
+}
+
+tinyxml2::XMLElement* MainWidget::get_element_bykey(const QString& key)
+{
+    element* ret = nullptr;
+    for (const auto& ele : current_) {
+        const char* data = ele->Attribute(keys_[0].c_str());
+        QString     qdata(data);
+        if (qdata != key) {
+            continue;
+        }
+        ret = ele;
+        break;
+    }
+    return ret;
+}
diff --git a/MainWidget.h b/MainWidget.h
index 39d99da..e3d967a 100644
--- a/MainWidget.h
+++ b/MainWidget.h
@@ -24,23 +24,30 @@ public:
 public:
     void set_work_exe(char* path);
     void generate_table_widget();
-    void push_content(const std::vector<tinyxml2::XMLElement*>& eles);
+    void push_content(const std::vector<element*>& eles);
 
 private:
-    void read();
-    void search();
-    void item_changed_handle(QTableWidgetItem *item);
-    void save();
+    void     read();
+    void     search();
+    void     item_changed_handle(QTableWidgetItem* item);
+    void     save();
+    void     copy_select_line();
+    void     del_select_line();
+    element* get_current_select_key();
+
 private:
-    Ui::MainWidget*                    ui;
-    ConfigIni                          ini_{};
-    CXmlOpr                            xml_{};
-    std::string                        exe_path_{};
-    QTableWidget*                      tab_widget_{};
-    std::vector<tinyxml2::XMLElement*> vec_{};
-    std::vector<tinyxml2::XMLElement*> current_{};
-    std::vector<std::string>           keys_{};
-    std::vector<int>                   width_{};
-    bool                               auto_add_{false};
+    element* get_element_bykey(const QString& key);
+
+private:
+    Ui::MainWidget*          ui;
+    ConfigIni                ini_{};
+    CXmlOpr                  xml_{};
+    std::string              exe_path_{};
+    QTableWidget*            tab_widget_{};
+    std::vector<element*>    vec_{};
+    std::vector<element*>    current_{};
+    std::vector<std::string> keys_{};
+    std::vector<int>         width_{};
+    bool                     auto_add_{false};
 };
 #endif   // MAINWIDGET_H
diff --git a/MainWidget.ui b/MainWidget.ui
index 7b27942..d2c261f 100644
--- a/MainWidget.ui
+++ b/MainWidget.ui
@@ -67,6 +67,20 @@
        </property>
       </spacer>
      </item>
+     <item>
+      <widget class="QPushButton" name="btnCopySelectLine">
+       <property name="text">
+        <string>复制选定行</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="btnDelSelectLine">
+       <property name="text">
+        <string>删除选定行</string>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>
diff --git a/main.cpp b/main.cpp
index ba5f177..4cf99c8 100644
--- a/main.cpp
+++ b/main.cpp
@@ -7,9 +7,9 @@ int main(int argc, char *argv[])
     QApplication a(argc, argv);
 
 #ifdef _WIN32
-    QFont font("Microsoft YaHei", 10);
+    QFont font("Microsoft YaHei", 9);
     a.setFont(font);
-    a.setStyle("windows");
+    a.setStyle("fusion");
 #endif
 
     MainWidget w;
diff --git a/public_def.cpp b/public_def.cpp
index de5550b..c3365b8 100644
--- a/public_def.cpp
+++ b/public_def.cpp
@@ -1,4 +1,5 @@
 #include "public_def.h"
+#include <QMessageBox>
 
 std::vector<std::string> splitString(const std::string& input, const std::string& delimiter) {
     std::vector<std::string> tokens;
@@ -15,4 +16,9 @@ std::vector<std::string> splitString(const std::string& input, const std::string
     tokens.push_back(backup);
 
     return tokens;
-}
\ No newline at end of file
+}
+
+void CUtil::msg(QWidget* parent, const QString& content)
+{
+    QMessageBox::information(parent, u8"提示", content);
+}
diff --git a/public_def.h b/public_def.h
index d5cd3cc..e87c35f 100644
--- a/public_def.h
+++ b/public_def.h
@@ -3,6 +3,7 @@
 
 #include <string>
 #include <vector>
+#include <QWidget>
 
 struct OprBase {
     std::string node_path{};
@@ -13,4 +14,13 @@ struct OprBase {
 
 std::vector<std::string> splitString(const std::string& input, const std::string& delimiter);
 
+class CUtil
+{
+public:
+    CUtil() = default;
+    ~CUtil() = default;
+public:
+    static void msg(QWidget* parent, const QString& content);
+};
+
 #endif
\ No newline at end of file
diff --git a/src/xml_opr.cpp b/src/xml_opr.cpp
index 18bf458..933d053 100644
--- a/src/xml_opr.cpp
+++ b/src/xml_opr.cpp
@@ -21,7 +21,6 @@ bool CXmlOpr::parse_xml(std::vector<tinyxml2::XMLElement*>& vec)
 {
     std::string next_node{};
     std::string node_path = opr_base_.node_path;
-    tinyxml2::XMLElement* node = nullptr;
 
     auto nodes = splitString(opr_base_.node_path, "/");
     for (const auto& item : nodes) {
@@ -30,15 +29,15 @@ bool CXmlOpr::parse_xml(std::vector<tinyxml2::XMLElement*>& vec)
             continue;
         }
 
-        if (node == nullptr) {
-            node = doc_.FirstChildElement(item.c_str());
+        if (parent_node_ == nullptr) {
+            parent_node_ = doc_.FirstChildElement(item.c_str());
         }
         else {
-            node = node->FirstChildElement(item.c_str());
+            parent_node_ = parent_node_->FirstChildElement(item.c_str());
         }
     }
     vec.clear();
-    tinyxml2::XMLElement* purpose_node = node->FirstChildElement(opr_base_.the_node.c_str());
+    element* purpose_node = parent_node_->FirstChildElement(opr_base_.the_node.c_str());
     while (purpose_node)
     {
         vec.push_back(purpose_node);
@@ -47,6 +46,28 @@ bool CXmlOpr::parse_xml(std::vector<tinyxml2::XMLElement*>& vec)
     return true;
 }
 
+void CXmlOpr::insert_brother_node(element* brother, element* newer)
+{
+    if (!brother || !newer) {
+        return;
+    }
+    parent_node_->InsertAfterChild(brother, newer);
+}
+
+element* CXmlOpr::copy_element(element* ele)
+{
+    if (!ele) {
+        return nullptr;
+    }
+    element* ret = doc_.NewElement(ele->Name());
+    const auto* attribute = ele->FirstAttribute();
+    while (attribute) {
+        ret->SetAttribute(attribute->Name(), attribute->Value());
+        attribute = attribute->Next();
+    }
+    return ret;
+}
+
 bool CXmlOpr::save()
 {
     auto ret = doc_.SaveFile(xml_path_.c_str());
diff --git a/src/xml_opr.h b/src/xml_opr.h
index c7a65c6..1e916ef 100644
--- a/src/xml_opr.h
+++ b/src/xml_opr.h
@@ -6,6 +6,7 @@
 #include <vector>
 #include "../public_def.h"
 
+typedef tinyxml2::XMLElement element;
 class CXmlOpr
 {
 public:
@@ -13,15 +14,18 @@ public:
     ~CXmlOpr();
 
 public:
-    bool open(const std::string& xml_path);
-    void set_baseinfo(const OprBase& base);
-    bool parse_xml(std::vector<tinyxml2::XMLElement*>& vec);
-    bool save();
+    bool     open(const std::string& xml_path);
+    void     set_baseinfo(const OprBase& base);
+    bool     parse_xml(std::vector<element*>& vec);
+    void     insert_brother_node(element* brother, element* newer);
+    element* copy_element(element* ele);
+    bool     save();
 
 private:
     tinyxml2::XMLDocument doc_{};
     OprBase               opr_base_{};
     std::string           xml_path_{};
+    element*              parent_node_{};
 };
 
 #endif
\ No newline at end of file