diff --git a/frontend/src/views/collect-log/CollectLogPage.vue b/frontend/src/views/collect-log/CollectLogPage.vue
index 54fd490..51c3505 100644
--- a/frontend/src/views/collect-log/CollectLogPage.vue
+++ b/frontend/src/views/collect-log/CollectLogPage.vue
@@ -220,7 +220,7 @@ function analysisTypeTag(type: string) {
   return map[type] || 'info'
 }
 
-function analysisTypeLabel(type: string) {
+function analysisTypeLabel(type: string | undefined) {
   const map: Record<string, string> = {
     NORMAL_UNCHANGED: '正常未变',
     PART_COUNT_INCREASE: '产量增减',
@@ -232,7 +232,7 @@ function analysisTypeLabel(type: string) {
     DATA_ANOMALY: '数据异常',
     COLLECTION_FAILED: '采集失败',
   }
-  return map[type] ?? type
+  return type ? (map[type] ?? type) : '未知'
 }
 
 function viewAnalysis(row: CollectAnalysis) {