diff --git a/core/frontend/src/store/index.js b/core/frontend/src/store/index.js
index e16296b2a8..e2a6bcd487 100644
--- a/core/frontend/src/store/index.js
+++ b/core/frontend/src/store/index.js
@@ -192,6 +192,7 @@ const data = {
       if (style) {
         style['selfAdaption'] = true
       }
+      style.panel['alpha'] = style.panel['alpha'] === undefined ? 100 : style.panel['alpha']
       state.canvasStyleData = style
     },
 
diff --git a/core/frontend/src/views/panel/subjectSetting/panelStyle/OverallSetting.vue b/core/frontend/src/views/panel/subjectSetting/panelStyle/OverallSetting.vue
index b51facd0e0..de730b1f61 100644
--- a/core/frontend/src/views/panel/subjectSetting/panelStyle/OverallSetting.vue
+++ b/core/frontend/src/views/panel/subjectSetting/panelStyle/OverallSetting.vue
@@ -242,6 +242,7 @@ export default {
         // 主题变更
         this.canvasStyleData.chartInfo.chartCommonStyle.backgroundColorSelect = true
         this.canvasStyleData.panel.backgroundType = 'color'
+        this.canvasStyleData.panel['alpha'] = 100
         if (this.overallSettingForm.panel.themeColor === 'light') {
           this.canvasStyleData.panel.color = deepCopy(LIGHT_THEME_PANEL_BACKGROUND)
           this.canvasStyleData.chartInfo.chartCommonStyle.color = deepCopy(LIGHT_THEME_COMPONENT_BACKGROUND)