diff --git a/src/main/java/cn/lihongjie/coal/Codegen.java b/src/main/java/cn/lihongjie/coal/Codegen.java
index c7905d7c..e6d2edaf 100644
--- a/src/main/java/cn/lihongjie/coal/Codegen.java
+++ b/src/main/java/cn/lihongjie/coal/Codegen.java
@@ -32,6 +32,7 @@ import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Sort;
 import org.springframework.stereotype.Repository;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -154,6 +155,7 @@ public class Codegen {
                         .addModifiers(Modifier.PUBLIC)
                         .addAnnotation(Service.class)
                         .addAnnotation(Slf4j.class)
+                        .addAnnotation(Transactional.class)
                         .superclass(
                                 ParameterizedTypeName.get(
                                         ClassName.get(BaseService.class),