diff --git a/src/main/java/com/xydl/cac/repository/BdzRepository.java b/src/main/java/com/xydl/cac/repository/BdzRepository.java
index 6d59830..570a468 100644
--- a/src/main/java/com/xydl/cac/repository/BdzRepository.java
+++ b/src/main/java/com/xydl/cac/repository/BdzRepository.java
@@ -5,8 +5,13 @@ import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
+
 
 @Repository
 public interface BdzRepository extends JpaRepository<Bdz, Integer>, JpaSpecificationExecutor<Bdz> {
 
+    List<Bdz> findByMc(String mc);
+
+    List<Bdz> findByMcAndIdIsNot(String mc, Integer id);
 }
\ No newline at end of file
diff --git a/src/main/java/com/xydl/cac/service/BdzService.java b/src/main/java/com/xydl/cac/service/BdzService.java
index 503b379..23e6de7 100644
--- a/src/main/java/com/xydl/cac/service/BdzService.java
+++ b/src/main/java/com/xydl/cac/service/BdzService.java
@@ -8,9 +8,9 @@ public interface BdzService {
 
     List<Bdz> listAll();
 
-    Bdz add(Bdz item);
+    Bdz add(Bdz item) throws Exception;
 
-    void update(Bdz item);
+    void update(Bdz item) throws Exception;
 
     void delete(Integer id) throws Exception;
 }
diff --git a/src/main/java/com/xydl/cac/service/impl/BdzServiceImpl.java b/src/main/java/com/xydl/cac/service/impl/BdzServiceImpl.java
index 75cdbf4..49acb74 100644
--- a/src/main/java/com/xydl/cac/service/impl/BdzServiceImpl.java
+++ b/src/main/java/com/xydl/cac/service/impl/BdzServiceImpl.java
@@ -29,13 +29,21 @@ public class BdzServiceImpl implements BdzService {
     }
 
     @Override
-    public Bdz add(Bdz item) {
+    public Bdz add(Bdz item) throws Exception {
         item.setId(null);
+        List<Bdz> list = repository.findByMc(item.getMc());
+        if (!CollectionUtils.isEmpty(list)) {
+            throw new Exception("该名称已被使用");
+        }
         return repository.save(item);
     }
 
     @Override
-    public void update(Bdz item) {
+    public void update(Bdz item) throws Exception {
+        List<Bdz> list = repository.findByMcAndIdIsNot(item.getMc(), item.getId());
+        if (!CollectionUtils.isEmpty(list)) {
+            throw new Exception("该名称已被使用");
+        }
         repository.save(item);
     }