diff --git a/src/main/java/com/xujie/sys/modules/sampletracking/service/impl/SampleProofTrackingServiceImpl.java b/src/main/java/com/xujie/sys/modules/sampletracking/service/impl/SampleProofTrackingServiceImpl.java
index 5be4ba7c..b27f25df 100644
--- a/src/main/java/com/xujie/sys/modules/sampletracking/service/impl/SampleProofTrackingServiceImpl.java
+++ b/src/main/java/com/xujie/sys/modules/sampletracking/service/impl/SampleProofTrackingServiceImpl.java
@@ -570,6 +570,11 @@ public class SampleProofTrackingServiceImpl implements SampleProofTrackingServic
         if (value == null) {
             return "-";
         }
+        if (value instanceof Date) {
+            // 导出场景下 Date 默认 toString() 会变成 Thu Aug...，统一转 yyyy-MM-dd 便于 Excel 阅读与筛选。
+            String dateText = toDateString(value);
+            return isBlank(dateText) ? "-" : dateText;
+        }
         String text = String.valueOf(value);
         return isBlank(text) ? "-" : text;
     }