diff --git a/src/views/BigScreen.vue b/src/views/BigScreen.vue
index 96a43e5d..a821d97d 100644
--- a/src/views/BigScreen.vue
+++ b/src/views/BigScreen.vue
@@ -38,14 +38,14 @@
             <OpenShare class="component-container" />
           </div>
 
-          <!-- 3. 第三行：数据仓库（内容较多）+ 数据质量检测（左右布局） -->
+          <!-- 3. 第三行：数据仓库（内容较多） -->
           <div class="dashboard-row third-row">
-            <div class="dashboard-col left-col">
-              <DataWarehouse class="component-container" />
-            </div>
-            <div class="dashboard-col right-col">
-              <DataQuality class="component-container" />
-            </div>
+            <DataWarehouse class="component-container" />
+          </div>
+
+          <!-- 4. 第四行：数据源 -->
+          <div class="dashboard-row fourth-row">
+            <DataQuality class="component-container" />
           </div>
         </div>
       </div>
@@ -137,21 +137,9 @@ export default {
 
     // 第一、三行：独占一行（内容较多，需全屏宽度）
     &.first-row,
-    &.second-row {
-      width: 100%;
-    }
-
-    // 第一行：左右两列布局
+    &.second-row,
     &.third-row {
-      flex-direction: row;
-      gap: 20px;
-
-      .dashboard-col {
-        flex: 1; // 两列等宽
-        display: flex;
-        flex-direction: column;
-        gap: 12px;
-      }
+      width: 100%;
     }
   }