diff --git a/backend/internal/router/admin/versions.go b/backend/internal/router/admin/versions.go
index 61132f2..5461be6 100644
--- a/backend/internal/router/admin/versions.go
+++ b/backend/internal/router/admin/versions.go
@@ -98,6 +98,27 @@ func handleGetAllVersions(c *gin.Context) {
 	var forcedCount int64
 	database.DB.Model(&model.Version{}).Where("application_id IN ? AND update_strategy = ?", appIDs, "forced").Count(&forcedCount)
 
+	// 计算总文件大小
+	var totalSize int64
+	sizeQuery := database.DB.Model(&model.Version{}).Where("application_id IN ?", appIDs)
+	if applicationIDFilter != "" {
+		sizeQuery = sizeQuery.Where("application_id = ?", applicationIDFilter)
+	}
+	if updateStrategyFilter != "" {
+		sizeQuery = sizeQuery.Where("update_strategy = ?", updateStrategyFilter)
+	}
+	if updateTypeFilter != "" {
+		sizeQuery = sizeQuery.Where("update_type = ?", updateTypeFilter)
+	}
+	if updateMethodFilter != "" {
+		sizeQuery = sizeQuery.Where("update_method = ?", updateMethodFilter)
+	}
+	if searchFilter != "" {
+		searchLower := strings.ToLower(searchFilter)
+		sizeQuery = sizeQuery.Where("LOWER(version) LIKE ? OR LOWER(description) LIKE ?", "%"+searchLower+"%", "%"+searchLower+"%")
+	}
+	sizeQuery.Select("COALESCE(SUM(file_size), 0)").Scan(&totalSize)
+
 	query := database.DB.Where("application_id IN ?", appIDs)
 	if applicationIDFilter != "" {
 		query = query.Where("application_id = ?", applicationIDFilter)
@@ -190,6 +211,7 @@ func handleGetAllVersions(c *gin.Context) {
 		"versions":     result,
 		"total":        total,
 		"forced_count": forcedCount,
+		"total_size":   totalSize,
 	})
 }
 
diff --git a/frontend/src/pages/admin/versions/index.vue b/frontend/src/pages/admin/versions/index.vue
index c028f72..33f668f 100644
--- a/frontend/src/pages/admin/versions/index.vue
+++ b/frontend/src/pages/admin/versions/index.vue
@@ -68,9 +68,7 @@ const methodOptions = computed(() => [
   { label: t('admin.versions.methods.manual'), value: 'manual' },
 ])
 
-const totalSize = computed(() => {
-  return versions.value.reduce((sum, v) => sum + (v.file_size || 0), 0)
-})
+const totalSize = ref(0)
 
 const serverPagination = computed(() => ({
   page: currentPage.value,
@@ -131,6 +129,7 @@ async function fetchVersions() {
     versions.value = data?.versions || []
     total.value = data?.total || 0
     forcedCount.value = data?.forced_count || 0
+    totalSize.value = data?.total_size || 0
   }
   catch (error) {
     console.error('加载版本列表失败:', error)