diff --git a/src/ctaiHistoryTextEdit.cpp b/src/ctaiHistoryTextEdit.cpp
index 6af012b..8e8593e 100644
--- a/src/ctaiHistoryTextEdit.cpp
+++ b/src/ctaiHistoryTextEdit.cpp
@@ -23,6 +23,7 @@ void ctaiHistoryTextEdit::init_layout(msg_type msg_type_mode)
     main_layout->setSpacing(1);
     main_layout->setContentsMargins(0, 0, 0, 0);
     setLayout(main_layout);
+    set_default_opts();
     connect_signals(msg_type_mode);
 }
 void ctaiHistoryTextEdit::init_msg_line()
@@ -108,6 +109,9 @@ void ctaiHistoryTextEdit::init_msg_header_layout(msg_type msg_type_mode)
         header_layout->addLayout(header_info_layout);
     }
 }
+void ctaiHistoryTextEdit::set_default_opts(){
+    m_msg_history->setFont(QFont(m_font,m_font_size));
+}
 void ctaiHistoryTextEdit::connect_signals(msg_type msg_type_mode)
 {
     if (msg_type_mode == SYSTEM)
@@ -206,11 +210,16 @@ void ctaiHistoryTextEdit::on_display_changed(QString mode)
     {
         m_msg_history->setText(m_current_content);
     }
-    else if (mode == "LaTeX Markdown")
+    else if (mode == "HTML源码")
     {
-        m_msg_history->setHtml(m_math_convert->replace_tags_svg(m_current_content));
+       
+    }else if(mode == "HTML渲染"){
+
+    }else if(mode == "Markdown源码"){
+
+    }else if(mode == "Markdown渲染"){
+        m_msg_history->setMarkdown(m_math_convert->replace_tags_svg(m_current_content,m_font_size));
         qDebug() << "LaTeX Markdown:" << m_msg_history->toMarkdown();
-        qDebug() << "Html:" << m_msg_history->toHtml();
     }
 }
 // tokens按钮实现功能的槽函数
diff --git a/src/ctaiHistoryTextEdit.h b/src/ctaiHistoryTextEdit.h
index 807b9d4..b0404fe 100644
--- a/src/ctaiHistoryTextEdit.h
+++ b/src/ctaiHistoryTextEdit.h
@@ -80,6 +80,7 @@ signals:
 
 private:
     void connect_signals(msg_type msg_type_mode); // 连接信号和槽
+    void set_default_opts();
 private:
     ctaiMathConvert *m_math_convert;
     QFrame *msg_line;
@@ -118,8 +119,12 @@ private:
     QString m_msg_sned_id = {};
     // 本次信息
     QString m_current_content;
-    QString m_font = "Arial";
-    int m_font_size = 8;
+    //默认字体跟随软件全局字体
+    QString m_font = sui_font_table[sui_config.font];//"Arial";
+    //粗体字
+    bool    m_bold=false;
+    //字号大小
+    int     m_font_size = 14;
     QSpacerItem *bottom_spacer = new QSpacerItem(0, 0, QSizePolicy::Fixed, QSizePolicy::Expanding);
 };
 
diff --git a/src/ctaiHistoryTools.cpp b/src/ctaiHistoryTools.cpp
index a84c124..a075a28 100644
--- a/src/ctaiHistoryTools.cpp
+++ b/src/ctaiHistoryTools.cpp
@@ -63,6 +63,8 @@ void ctaiHistoryTools::initDisplayMode()
     for(auto str:sui_font_table){
         m_msg_display_font_combobox->addItem(str);
     }
+    m_msg_display_font_size_combobox->setCurrentIndex(5);
+    m_msg_display_font_combobox->setCurrentIndex(sui_config.font);
 }
 void ctaiHistoryTools::initConnect()
 {
diff --git a/src/ctaiHistoryTools.h b/src/ctaiHistoryTools.h
index 246cabf..ce958e6 100644
--- a/src/ctaiHistoryTools.h
+++ b/src/ctaiHistoryTools.h
@@ -40,7 +40,7 @@ private:
     QAction *m_msg_save_markdown = {};
     QAction *m_msg_save_pdf = {};
     QSpacerItem *sparcer_item = new QSpacerItem(0, 0, QSizePolicy::Expanding, QSizePolicy::Fixed);
-    QStringList ds_mode_str={"原始文本","LaTeX Markdown"};
+    QStringList ds_mode_str={"原始文本","HTML源码","HTML渲染","Markdown源码","Markdown渲染"};
     QStringList ds_font_size_str={"4","6","8","10","12","14","16","18","20"};
     
 private:
diff --git a/src/ctaiMathConvert.cpp b/src/ctaiMathConvert.cpp
index f6fce8b..6c98e5e 100644
--- a/src/ctaiMathConvert.cpp
+++ b/src/ctaiMathConvert.cpp
@@ -69,8 +69,9 @@ QString ctaiMathConvert::clean_latex_for_mula(const QString &formula)
     return result;
 }
 
-QString ctaiMathConvert::replace_tags_svg(const QString &text)
+QString ctaiMathConvert::replace_tags_svg(const QString &text,int font_size)
 {
+    m_text_size=font_size;
     //QString result("4566545646\\[\n f'(a) = \\lim_{h \\to 0} \\frac{f(a + h) - f(a)}{h}\n \\]654564646");
     QString result=text;
     // 使用改进的正则表达式模式
@@ -100,12 +101,12 @@ QString ctaiMathConvert::replace_tags_svg(const QString &text)
         debug_latex_match(result, match);
         // 清理和转换公式
         //QString cleanFormula = clean_latex_for_mula(matchedText);
-        //QString svg_markdown = markdown_base + math_convert_svg(matchedText) + ")";
-        QString svg_html = html_base + math_convert_svg(matchedText) + "/>";
+        QString svg_markdown = markdown_base + math_convert_svg(matchedText) + ")";
+        //QString svg_html = html_base + math_convert_svg(matchedText) + "/>";
         // 保存替换信息
         replacements.prepend({match.capturedStart(), match.capturedLength()});
-        //svgResults.prepend(svg_markdown);
-        svgResults.prepend(svg_html);
+        svgResults.prepend(svg_markdown);
+        //svgResults.prepend(svg_html);
     }
 
     // 从后向前执行替换，避免位置改变影响
diff --git a/src/ctaiMathConvert.h b/src/ctaiMathConvert.h
index 87bb067..bdfc552 100644
--- a/src/ctaiMathConvert.h
+++ b/src/ctaiMathConvert.h
@@ -42,7 +42,7 @@ class ctaiMathConvert :public QObject
 public:
     explicit ctaiMathConvert();
     ~ctaiMathConvert();
-    QString replace_tags_svg(const QString &text);
+    QString replace_tags_svg(const QString &text,int font_size);
     void set_convert_opts();
     void save_svg(QPixmap& img);    
 
@@ -53,7 +53,7 @@ private:
     QByteArray svg_to_base64(QPixmap& pix);
     TexGuard texGuard;
     //宽度
-    int        m_render_width=300;
+    int        m_render_width=600;
     int        m_render_height=64;
     //文本大小
     int        m_text_size=20;