diff --git a/designer-chart/src/main/java/com/fr/van/chart/designer/component/VanChartTooltipContentPane.java b/designer-chart/src/main/java/com/fr/van/chart/designer/component/VanChartTooltipContentPane.java
index f64bd54de..523d39a3e 100644
--- a/designer-chart/src/main/java/com/fr/van/chart/designer/component/VanChartTooltipContentPane.java
+++ b/designer-chart/src/main/java/com/fr/van/chart/designer/component/VanChartTooltipContentPane.java
@@ -51,6 +51,15 @@ public class VanChartTooltipContentPane extends BasicBeanPane<AttrTooltipContent
 
     private static final long serialVersionUID = 8825929000117843641L;
 
+    // 字符样式button
+    private static final int TEXT_ATTR_AUTO_INDEX = 0;
+    private static final int TEXT_ATTR_CUSTOM_INDEX = 1;
+    // 标签内容button
+    private static final int COMMON_INDEX = 0;
+    private static final int RICH_EDITOR_INDEX = 1;
+    private static final int CUSTOM_INDEX_WITH_RICH_EDITOR = 2;
+    private static final int CUSTOM_INDEX_WITHOUT_RICH_EDITOR = 1;
+
     private UIButtonGroup<Integer> content;
 
     private CategoryNameFormatPaneWithCheckBox categoryNameFormatPane;
@@ -232,9 +241,9 @@ public class VanChartTooltipContentPane extends BasicBeanPane<AttrTooltipContent
     private void initCenterPaneWithRichEditor() {
         centerPanel = new JPanel(new CardLayout()) {
             public Dimension getPreferredSize() {
-                if (content.getSelectedIndex() == 0) {
+                if (content.getSelectedIndex() == COMMON_INDEX) {
                     return commonPanel.getPreferredSize();
-                } else if (content.getSelectedIndex() == 1) {
+                } else if (content.getSelectedIndex() == RICH_EDITOR_INDEX) {
                     return editorPanel.getPreferredSize();
                 } else {
                     return htmlPanel.getPreferredSize();
@@ -250,7 +259,7 @@ public class VanChartTooltipContentPane extends BasicBeanPane<AttrTooltipContent
     private void initCenterPaneWithoutRichEditor() {
         centerPanel = new JPanel(new CardLayout()) {
             public Dimension getPreferredSize() {
-                if (content.getSelectedIndex() == 0) {
+                if (content.getSelectedIndex() == COMMON_INDEX) {
                     return commonPanel.getPreferredSize();
                 } else {
                     return htmlPanel.getPreferredSize();
@@ -359,7 +368,7 @@ public class VanChartTooltipContentPane extends BasicBeanPane<AttrTooltipContent
     private void checkStylePane() {
         if (hasTextStylePane()) {
             stylePanel.setVisible(true);
-            textAttrPane.setVisible(styleButton.getSelectedIndex() == 1);
+            textAttrPane.setVisible(styleButton.getSelectedIndex() == TEXT_ATTR_CUSTOM_INDEX);
         } else {
             stylePanel.setVisible(false);
         }
@@ -508,22 +517,22 @@ public class VanChartTooltipContentPane extends BasicBeanPane<AttrTooltipContent
     private void checkCardPaneWithRichEditor() {
         CardLayout cardLayout = (CardLayout) centerPanel.getLayout();
 
-        if (content.getSelectedIndex() == 2) {
+        if (content.getSelectedIndex() == CUSTOM_INDEX_WITH_RICH_EDITOR) {
             cardLayout.show(centerPanel, Toolkit.i18nText("Fine-Design_Chart_Custom"));
             checkCustomPane();
-        } else if (content.getSelectedIndex() == 1) {
+        } else if (content.getSelectedIndex() == RICH_EDITOR_INDEX) {
             cardLayout.show(centerPanel, Toolkit.i18nText("Fine-Design_Chart_Rich_Text"));
         } else {
             cardLayout.show(centerPanel, Toolkit.i18nText("Fine-Design_Chart_Common"));
         }
 
-        stylePanel.setVisible(hasTextStylePane() && content.getSelectedIndex() != 1);
+        stylePanel.setVisible(hasTextStylePane() && content.getSelectedIndex() != RICH_EDITOR_INDEX);
     }
 
     private void checkCardPaneWithoutRichEditor() {
         CardLayout cardLayout = (CardLayout) centerPanel.getLayout();
 
-        if (content.getSelectedIndex() == 1) {
+        if (content.getSelectedIndex() == CUSTOM_INDEX_WITHOUT_RICH_EDITOR) {
             cardLayout.show(centerPanel, Toolkit.i18nText("Fine-Design_Chart_Custom"));
             checkCustomPane();
         } else {
@@ -587,9 +596,9 @@ public class VanChartTooltipContentPane extends BasicBeanPane<AttrTooltipContent
         }
         if (hasTextStylePane()) {
             if (attrTooltipContent.isCustom()) {
-                styleButton.setSelectedIndex(1);
+                styleButton.setSelectedIndex(TEXT_ATTR_CUSTOM_INDEX);
             } else {
-                styleButton.setSelectedIndex(0);
+                styleButton.setSelectedIndex(TEXT_ATTR_AUTO_INDEX);
             }
             this.textAttrPane.populate(attrTooltipContent.getTextAttr());
         }
@@ -606,20 +615,20 @@ public class VanChartTooltipContentPane extends BasicBeanPane<AttrTooltipContent
     private void populateTypeButton(AttrTooltipContent attrTooltipContent) {
         if (supportRichEditor()) {
             if (attrTooltipContent.isCommon()) {
-                content.setSelectedIndex(0);
+                content.setSelectedIndex(COMMON_INDEX);
             } else if (attrTooltipContent.isRichText()) {
-                content.setSelectedIndex(1);
+                content.setSelectedIndex(RICH_EDITOR_INDEX);
             } else {
-                content.setSelectedIndex(2);
+                content.setSelectedIndex(CUSTOM_INDEX_WITH_RICH_EDITOR);
             }
 
             return;
         }
 
         if (attrTooltipContent.isCommon()) {
-            content.setSelectedIndex(0);
+            content.setSelectedIndex(COMMON_INDEX);
         } else {
-            content.setSelectedIndex(1);
+            content.setSelectedIndex(CUSTOM_INDEX_WITHOUT_RICH_EDITOR);
         }
     }
 
@@ -706,7 +715,7 @@ public class VanChartTooltipContentPane extends BasicBeanPane<AttrTooltipContent
             updateTooltipRichText(attrTooltipContent);
         }
         if (hasTextStylePane()) {
-            attrTooltipContent.setCustom(styleButton.getSelectedIndex() == 1);
+            attrTooltipContent.setCustom(styleButton.getSelectedIndex() == TEXT_ATTR_CUSTOM_INDEX);
             attrTooltipContent.setTextAttr(this.textAttrPane.update());
         }
 
@@ -719,13 +728,13 @@ public class VanChartTooltipContentPane extends BasicBeanPane<AttrTooltipContent
 
     private void updateLabelType(AttrTooltipContent attrTooltipContent) {
         if (supportRichEditor()) {
-            attrTooltipContent.setCommon(content.getSelectedIndex() == 0);
-            attrTooltipContent.setRichText(content.getSelectedIndex() == 1);
+            attrTooltipContent.setCommon(content.getSelectedIndex() == COMMON_INDEX);
+            attrTooltipContent.setRichText(content.getSelectedIndex() == RICH_EDITOR_INDEX);
 
             return;
         }
 
-        attrTooltipContent.setCommon(content.getSelectedIndex() == 0);
+        attrTooltipContent.setCommon(content.getSelectedIndex() == COMMON_INDEX);
         attrTooltipContent.setRichText(false);
     }