diff --git a/src/views/modules/sampleTracking/projectProofTracking.vue b/src/views/modules/sampleTracking/projectProofTracking.vue
index 2d8f115..0275045 100644
--- a/src/views/modules/sampleTracking/projectProofTracking.vue
+++ b/src/views/modules/sampleTracking/projectProofTracking.vue
@@ -2232,6 +2232,18 @@ export default {
     },
     handleOneKeyProofingNoChange (proofingNo) {
       const selectedNo = this.isBlankValue(proofingNo) ? '' : String(proofingNo).trim()
+      if (this.oneKeyDialogMode === 'edit') {
+        // 修改模式下预计完成日期以数据库已存值为准，不跟随打样单号自动回填/清空。
+        if (!selectedNo) {
+          this.oneKeyForm.proofingNo = ''
+          return
+        }
+        const matchedInEdit = this.oneKeyProofingApplyOptions.find(item => item && item.applyNo === selectedNo)
+        if (matchedInEdit) {
+          this.oneKeyForm.proofingNo = matchedInEdit.applyNo
+        }
+        return
+      }
       if (!selectedNo) {
         this.oneKeyForm.requiredDeliveryDate = ''
         return