diff --git a/app/src/protyle/render/av/relation.ts b/app/src/protyle/render/av/relation.ts
index 8a5035778..92a394f7b 100644
--- a/app/src/protyle/render/av/relation.ts
+++ b/app/src/protyle/render/av/relation.ts
@@ -115,7 +115,10 @@ export const updateRelation = (options: {
     let colData: IAVColumn;
     options.colsData.find(item => {
         if (item.id === colId) {
-            colData = item
+            if (!item.relation) {
+                item.relation = {}
+            }
+            colData = item;
             return true;
         }
     })
diff --git a/app/src/types/index.d.ts b/app/src/types/index.d.ts
index e9dd3f4dc..a2d877155 100644
--- a/app/src/types/index.d.ts
+++ b/app/src/types/index.d.ts
@@ -1164,7 +1164,7 @@ interface IAVCellAssetValue {
 }
 
 interface IAVCellRelationValue {
-    avID: string
-    backKeyID: string
-    isTwoWay: boolean
+    avID?: string
+    backKeyID?: string
+    isTwoWay?: boolean
 }