diff --git a/src/main/java/digital/laboratory/platform/entrustment/service/impl/EntrustmentServiceImpl.java b/src/main/java/digital/laboratory/platform/entrustment/service/impl/EntrustmentServiceImpl.java
index e3b84e5..4cc6f5d 100644
--- a/src/main/java/digital/laboratory/platform/entrustment/service/impl/EntrustmentServiceImpl.java
+++ b/src/main/java/digital/laboratory/platform/entrustment/service/impl/EntrustmentServiceImpl.java
@@ -1402,7 +1402,11 @@ public class EntrustmentServiceImpl extends ServiceImpl<EntrustmentMapper, Entru
             if (materialList == null || materialList.size() == 0) {
                 throw new RuntimeException("请至少添加一个检材后再提交!");
             }
-            entrustment.setEntrustRequirement(this.buildEntrustReq(materialList));
+            if (StrUtil.isBlank(entrust.getEntrustRequirement())) {
+                entrustment.setEntrustRequirement(this.buildEntrustReq(materialList));
+            } else {
+                entrustment.setEntrustRequirement(entrust.getEntrustRequirement());
+            }
             this.updateById(entrustment);
             result = entrustment;
         }