diff --git a/src/component/Detail/DesignDetail.vue b/src/component/Detail/DesignDetail.vue
index 2891ce4a..8d867904 100644
--- a/src/component/Detail/DesignDetail.vue
+++ b/src/component/Detail/DesignDetail.vue
@@ -579,11 +579,11 @@ export default defineComponent({
 					}
 					segmentImage(detailData.selectDetail.maskUrl,partialDesign,size).then(async (rv)=>{
 						let front = detailData.frontBack.front[detailData.imgDomIndex]
+						if(!front)return resolve()
 						let back = detailData.frontBack.back[detailData.imgDomIndex]
-
-						front.oldImageUrl = ''
-						front.oldMaskUrl = ''
-						back.oldImageUrl = ''
+						if(front?.oldImageUrl)front.oldImageUrl = ''
+						if(front?.oldMaskUrl)front.oldMaskUrl = ''
+						if(back?.oldImageUrl)back.oldImageUrl = ''
 						front.imageUrl = rv.targetFrontUrl
 						back.imageUrl = rv.targetBackUrl
 						store.commit('DesignDetail/canvasPreviewUpdata',{type:detailData.isEditPattern.value?'all':detailData.currentDetailType,callBack:setRevocation})