diff --git a/klp-wms/src/main/java/com/klp/service/impl/WmsMaterialCoilServiceImpl.java b/klp-wms/src/main/java/com/klp/service/impl/WmsMaterialCoilServiceImpl.java
index 987dd107..aa8b62af 100644
--- a/klp-wms/src/main/java/com/klp/service/impl/WmsMaterialCoilServiceImpl.java
+++ b/klp-wms/src/main/java/com/klp/service/impl/WmsMaterialCoilServiceImpl.java
@@ -364,7 +364,7 @@ public class WmsMaterialCoilServiceImpl implements IWmsMaterialCoilService {
     }
 
     /**
-     * 单个更新（正常更新，不产生新记录，二维码不变）
+     * 单个更新（正常更新，记录历史变更）
      */
     private Boolean updateBySingle(WmsMaterialCoilBo bo) {
         // 查询原钢卷
@@ -400,7 +400,9 @@ public class WmsMaterialCoilServiceImpl implements IWmsMaterialCoilService {
         
         if (flag) {
             // 更新二维码内容（添加新的step）
-            updateQrcodeContentForNormalUpdate(oldCoil, bo);
+            if (oldCoil.getQrcodeRecordId() != null) {
+                updateQrcodeContentForNormalUpdate(oldCoil, bo);
+            }
         }
         
         return flag;
@@ -866,18 +868,46 @@ public class WmsMaterialCoilServiceImpl implements IWmsMaterialCoilService {
             Map<String, Object> newStep = new HashMap<>();
             newStep.put("step", steps.size() + 1);
             newStep.put("action", "更新");
-            newStep.put("operation", "更新");
+            newStep.put("operation", "信息更新");
             newStep.put("old_current_coil_no", oldCoil.getCurrentCoilNo());
             newStep.put("new_current_coil_no", bo.getCurrentCoilNo());
-            newStep.put("coil_id", String.valueOf(bo.getCoilId()));
+            newStep.put("old_coil_id", String.valueOf(oldCoil.getCoilId()));
             newStep.put("operator", LoginHelper.getUsername());
+            
+            // 记录具体的变更字段
+            List<String> changedFields = new ArrayList<>();
+            if (bo.getCurrentCoilNo() != null && !bo.getCurrentCoilNo().equals(oldCoil.getCurrentCoilNo())) {
+                changedFields.add("钢卷号: " + oldCoil.getCurrentCoilNo() + " → " + bo.getCurrentCoilNo());
+            }
+            if (bo.getTeam() != null && !bo.getTeam().equals(oldCoil.getTeam())) {
+                changedFields.add("班组: " + oldCoil.getTeam() + " → " + bo.getTeam());
+            }
+            if (bo.getWarehouseId() != null && !bo.getWarehouseId().equals(oldCoil.getWarehouseId())) {
+                changedFields.add("逻辑库区ID: " + oldCoil.getWarehouseId() + " → " + bo.getWarehouseId());
+            }
+            if (bo.getActualWarehouseId() != null && !bo.getActualWarehouseId().equals(oldCoil.getActualWarehouseId())) {
+                changedFields.add("真实库区ID: " + oldCoil.getActualWarehouseId() + " → " + bo.getActualWarehouseId());
+            }
+            if (bo.getGrossWeight() != null && !bo.getGrossWeight().equals(oldCoil.getGrossWeight())) {
+                changedFields.add("毛重: " + oldCoil.getGrossWeight() + " → " + bo.getGrossWeight());
+            }
+            if (bo.getNetWeight() != null && !bo.getNetWeight().equals(oldCoil.getNetWeight())) {
+                changedFields.add("净重: " + oldCoil.getNetWeight() + " → " + bo.getNetWeight());
+            }
+            if (bo.getRemark() != null && !bo.getRemark().equals(oldCoil.getRemark())) {
+                changedFields.add("备注: " + oldCoil.getRemark() + " → " + bo.getRemark());
+            }
+            
+            newStep.put("changed_fields", String.join("; ", changedFields));
             newStep.put("update_time", new java.util.Date());
 
             steps.add(newStep);
             contentMap.put("steps", steps);
             
             // 更新当前钢卷号
-            contentMap.put("current_coil_no", bo.getCurrentCoilNo());
+            if (bo.getCurrentCoilNo() != null) {
+                contentMap.put("current_coil_no", bo.getCurrentCoilNo());
+            }
             
             // current_coil_id保持不变（因为coilId没有变化）