diff --git a/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java b/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java
index b9c2dc5..32d24bb 100644
--- a/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java
+++ b/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java
@@ -22,6 +22,7 @@ import cn.teammodel.test.LessonRecordQueryService;
 import cn.teammodel.utils.GroupUtil;
 import cn.teammodel.utils.SchoolDateUtil;
 import com.azure.cosmos.models.CosmosPatchOperations;
+import com.azure.cosmos.models.PartitionKey;
 import com.azure.spring.data.cosmos.core.query.CosmosPageRequest;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -1396,14 +1397,14 @@ public class TeacherServiceImpl implements TeacherService {
     public void update(TeacherDto teacherDto) {
         try {
             String id = teacherDto.getTmdId();
-            String code = String.format(teacherDto.getCode(), id);
+            String code = teacherDto.getCode() + "-" + id;
             PtTeacherInfo ptTeacherInfo = ptTeacherRepository.findByIdAndCode(id, code);
             // 局部更新
             CosmosPatchOperations operations = CosmosPatchOperations.create();
             if (ptTeacherInfo != null) {
                 operations.set("/identity", teacherDto.getIdentity());
             }
-            ptTeacherRepository.save(id, PK.buildOf(teacherDto.getCode(), teacherDto.getTmdId()), PtTeacherInfo.class, operations);
+            ptTeacherRepository.save(id, new PartitionKey(code), PtTeacherInfo.class, operations);
         } catch (Exception ex) {
             throw new ServiceException(ErrorCode.SYSTEM_ERROR.getCode(), "数据更新失败: " + ex.getMessage());
         }
@@ -1413,7 +1414,7 @@ public class TeacherServiceImpl implements TeacherService {
     public Map<String, Object> findIdentityByTmdId(TeacherDto teacherDto) {
         try {
             String id = teacherDto.getTmdId();
-            String code = String.format(teacherDto.getCode(), id);
+            String code = teacherDto.getCode() + "-" + id;
             PtTeacherInfo ptTeacherInfo = ptTeacherRepository.findByIdAndCode(id, code);
             if (ptTeacherInfo != null) {
                 Map<String, Object> result = new HashMap<>();