diff --git a/DSView/pv/dialogs/applicationpardlg.cpp b/DSView/pv/dialogs/applicationpardlg.cpp
index 7510bfa7..1aefb212 100644
--- a/DSView/pv/dialogs/applicationpardlg.cpp
+++ b/DSView/pv/dialogs/applicationpardlg.cpp
@@ -87,7 +87,7 @@ void ApplicationParamDlg::bind_font_size_list(QComboBox *box, float size)
 {   
     int selDex = -1;
 
-    for(int i=9; i<=15; i++)
+    for(int i=7; i<=13; i++)
     {
         box->addItem(QString::number(i));
         if (i == size){
@@ -95,7 +95,7 @@ void ApplicationParamDlg::bind_font_size_list(QComboBox *box, float size)
         }
     }
     if (selDex == -1)
-        selDex = 0;
+        selDex = 2;
     box->setCurrentIndex(selDex);
 }
 
diff --git a/DSView/pv/dock/protocoldock.cpp b/DSView/pv/dock/protocoldock.cpp
index dd337d21..b341d010 100644
--- a/DSView/pv/dock/protocoldock.cpp
+++ b/DSView/pv/dock/protocoldock.cpp
@@ -46,6 +46,7 @@
 #include <string>
 #include <QToolButton>
 #include <algorithm>
+#include <QTableWidgetItem>
 #include "../ui/msgbox.h"
 #include "../dsvdef.h"
 #include "../config/appconfig.h"
@@ -1036,8 +1037,15 @@ bool ProtocolDock::protocol_sort_callback(const DecoderInfoItem *o1, const Decod
     QFont font = this->font();
     font.setPointSizeF(AppConfig::Instance().appOptions.fontSize);
     ui::set_form_font(this, font);
+    _table_view->setFont(font);
+
+    for(auto lay : _protocol_lay_items){
+        lay->update_font();
+    }
+
     font.setPointSizeF(font.pointSizeF() + 1);
     this->parentWidget()->setFont(font);
+    _table_view->horizontalHeader()->setFont(font);
  }
 
 } // namespace dock
diff --git a/DSView/pv/dock/protocolitemlayer.cpp b/DSView/pv/dock/protocolitemlayer.cpp
index 64ed1c51..9f39b053 100644
--- a/DSView/pv/dock/protocolitemlayer.cpp
+++ b/DSView/pv/dock/protocolitemlayer.cpp
@@ -27,7 +27,8 @@
 namespace pv {
 namespace dock {
   
-ProtocolItemLayer::ProtocolItemLayer(QWidget *parent, QString protocolName, IProtocolItemLayerCallback *callback){
+ProtocolItemLayer::ProtocolItemLayer(QWidget *parent, QString protocolName, IProtocolItemLayerCallback *callback)
+{
         assert(parent);
         assert(callback);
 
@@ -68,6 +69,8 @@ ProtocolItemLayer::ProtocolItemLayer(QWidget *parent, QString protocolName, IPro
         connect(_del_button, SIGNAL(clicked()),this, SLOT(on_del_protocol()));        
         connect(_set_button, SIGNAL(clicked()),this, SLOT(on_set_protocol()));
         connect(_format_combox, SIGNAL(currentIndexChanged(int)),this, SLOT(on_format_select_changed(int)));
+
+        update_font();
 }
 
 ProtocolItemLayer::~ProtocolItemLayer(){ 
@@ -161,5 +164,12 @@ void ProtocolItemLayer::LoadFormatSelect(bool bSingle)
     _protocol_label->setText(name);
  }
 
+ void ProtocolItemLayer::update_font()
+ {
+    QFont font = _protocol_label->font();
+    font.setPointSizeF(AppConfig::Instance().appOptions.fontSize);
+    _protocol_label->setFont(font);
+ }
+
 } //dock
 } //pv
diff --git a/DSView/pv/dock/protocolitemlayer.h b/DSView/pv/dock/protocolitemlayer.h
index b4e93bca..38de97a6 100644
--- a/DSView/pv/dock/protocolitemlayer.h
+++ b/DSView/pv/dock/protocolitemlayer.h
@@ -66,6 +66,8 @@ public:
     void enable_format(bool flag);
 
     void set_label_name(QString name);
+
+    void update_font();
   
 private slots: 
     void on_set_protocol(); 
diff --git a/DSView/pv/view/header.cpp b/DSView/pv/view/header.cpp
index 9f32ce5b..ae6b83a7 100644
--- a/DSView/pv/view/header.cpp
+++ b/DSView/pv/view/header.cpp
@@ -127,8 +127,11 @@ void Header::paintEvent(QPaintEvent*)
     QColor fore(QWidget::palette().color(QWidget::foregroundRole()));
     fore.setAlpha(View::ForeAlpha);
  
-    QFont font(painter.font());    
-    font.setPointSizeF(9);
+    QFont font(painter.font());
+    float fSize = AppConfig::Instance().appOptions.fontSize;
+    if (fSize > 10)
+        fSize = 10;
+    font.setPointSizeF(fSize);
     painter.setFont(font);
 
     for(auto t : traces)
diff --git a/DSView/pv/view/ruler.cpp b/DSView/pv/view/ruler.cpp
index 96fb9af8..3076275b 100644
--- a/DSView/pv/view/ruler.cpp
+++ b/DSView/pv/view/ruler.cpp
@@ -197,7 +197,10 @@ void Ruler::paintEvent(QPaintEvent*)
     style()->drawPrimitive(QStyle::PE_Widget, &o, &p, this);
 
     QFont font = p.font();
-    font.setPointSizeF(9);
+    float fSize = AppConfig::Instance().appOptions.fontSize;
+    if (fSize > 10)
+        fSize = 10;
+    font.setPointSizeF(fSize);
     p.setFont(font);
 
     SigSession *session = AppControl::Instance()->GetSession();
diff --git a/DSView/pv/view/viewport.cpp b/DSView/pv/view/viewport.cpp
index 97793312..d8428b12 100644
--- a/DSView/pv/view/viewport.cpp
+++ b/DSView/pv/view/viewport.cpp
@@ -156,7 +156,10 @@ void Viewport::doPaint()
     style()->drawPrimitive(QStyle::PE_Widget, &o, &p, this);
 
     QFont font = p.font();
-    font.setPointSizeF(9);
+    float fSize = AppConfig::Instance().appOptions.fontSize;
+    if (fSize > 10)
+        fSize = 10;
+    font.setPointSizeF(fSize);
     p.setFont(font);
 
     _view.session().check_update();
@@ -557,8 +560,10 @@ void Viewport::paintProgress(QPainter &p, QColor fore, QColor back)
             p.setPen(View::Blue); 
 
             QFont font = p.font();
-            font.setPointSizeF(9);
-            font.setBold(true);
+            float fSize = AppConfig::Instance().appOptions.fontSize;
+            if (fSize > 10)
+                fSize = 10;
+            font.setPointSizeF(fSize);
             p.setFont(font);
 
             QRect status_rect = QRect(cenPos.x() - radius, cenPos.y() + radius * 0.4, radius * 2, radius * 0.5);
diff --git a/DSView/pv/view/viewstatus.cpp b/DSView/pv/view/viewstatus.cpp
index 8a1738b8..65aeb7db 100644
--- a/DSView/pv/view/viewstatus.cpp
+++ b/DSView/pv/view/viewstatus.cpp
@@ -69,7 +69,10 @@ void ViewStatus::paintEvent(QPaintEvent *)
     QColor fore(QWidget::palette().color(QWidget::foregroundRole()));
 
     QFont font = p.font();
-    font.setPointSizeF(9);
+    float fSize = AppConfig::Instance().appOptions.fontSize;
+    if (fSize > 10)
+        fSize = 10;
+    font.setPointSizeF(fSize);
     p.setFont(font);
 
     int mode = _session->get_device()->get_work_mode();