diff --git a/src/main/java/com/cool/modules/stock/controller/admin/AdminStockRecordController.java b/src/main/java/com/cool/modules/stock/controller/admin/AdminStockRecordController.java
index fddff3b..09c4dbf 100644
--- a/src/main/java/com/cool/modules/stock/controller/admin/AdminStockRecordController.java
+++ b/src/main/java/com/cool/modules/stock/controller/admin/AdminStockRecordController.java
@@ -32,6 +32,14 @@ public class AdminStockRecordController extends BaseController<StockRecordServic
         return R.ok();
     }
 
+    @Operation(summary = "锁定")
+    @PostMapping("/lock")
+    public R<Void> lock(@RequestBody JSONObject params) {
+        Long id = params.getLong("id");
+        service.lock(id, CoolSecurityUtil.getCurrentUserId());
+        return R.ok();
+    }
+
     @Operation(summary = "恢复")
     @PostMapping("/restore")
     public R<Void> restore(@RequestBody JSONObject params) {
diff --git a/src/main/java/com/cool/modules/stock/entity/StockRecordEntity.java b/src/main/java/com/cool/modules/stock/entity/StockRecordEntity.java
index 05c6731..5436553 100644
--- a/src/main/java/com/cool/modules/stock/entity/StockRecordEntity.java
+++ b/src/main/java/com/cool/modules/stock/entity/StockRecordEntity.java
@@ -32,6 +32,9 @@ public class StockRecordEntity extends BaseEntity<StockRecordEntity> {
     @ColumnDefine(comment = "卖出数量", defaultValue = "100")
     private Integer sellQuantity;
 
+    @ColumnDefine(comment = "是否已锁定", defaultValue = "0")
+    private Boolean locked;
+
     @ColumnDefine(comment = "是否已归档", defaultValue = "0")
     private Boolean archived;
 
diff --git a/src/main/java/com/cool/modules/stock/service/StockRecordService.java b/src/main/java/com/cool/modules/stock/service/StockRecordService.java
index 904946d..05d7c32 100644
--- a/src/main/java/com/cool/modules/stock/service/StockRecordService.java
+++ b/src/main/java/com/cool/modules/stock/service/StockRecordService.java
@@ -6,4 +6,5 @@ import com.cool.modules.stock.entity.StockRecordEntity;
 public interface StockRecordService extends BaseService<StockRecordEntity> {
     void archive(Long id, Long userId);
     void restore(Long id, Long userId);
+    void lock(Long id, Long userId);
 }
diff --git a/src/main/java/com/cool/modules/stock/service/impl/StockRecordServiceImpl.java b/src/main/java/com/cool/modules/stock/service/impl/StockRecordServiceImpl.java
index a6dd400..3383105 100644
--- a/src/main/java/com/cool/modules/stock/service/impl/StockRecordServiceImpl.java
+++ b/src/main/java/com/cool/modules/stock/service/impl/StockRecordServiceImpl.java
@@ -20,6 +20,21 @@ public class StockRecordServiceImpl extends BaseServiceImpl<StockRecordMapper, S
         if (type == ModifyEnum.ADD) {
             entity.setUserId(CoolSecurityUtil.getCurrentUserId());
         }
+        if (type == ModifyEnum.UPDATE) {
+            StockRecordEntity existing = getById(entity.getId());
+            if (existing != null && Boolean.TRUE.equals(existing.getLocked())) {
+                throw new RuntimeException("记录已锁定，无法修改");
+            }
+        }
+    }
+
+    @Override
+    public void lock(Long id, Long userId) {
+        StockRecordEntity entity = getById(id);
+        if (entity != null && entity.getUserId().equals(userId)) {
+            entity.setLocked(true);
+            updateById(entity);
+        }
     }
 
     @Override