diff --git a/apps/utils/mixins.py b/apps/utils/mixins.py
index 5e0bd9ea..990d5926 100755
--- a/apps/utils/mixins.py
+++ b/apps/utils/mixins.py
@@ -252,6 +252,7 @@ class ComplexQueryMixin:
         queryset = self.get_queryset()
         querys = vdata.get('querys', [])
         annotate_field_list = vdata.get('annotate_field_list', [])
+        distinct = vdata.get('distinct', True)
 
         if not querys:
             new_qs = queryset
@@ -274,6 +275,11 @@ class ComplexQueryMixin:
                     new_qs = new_qs | one_qs
             except Exception as e:
                 raise ParseError(str(e))
+
+        # 反向关联(右到左)查询容易因 JOIN 膨胀产生重复行，这里按主键回查去重
+        if distinct:
+            pk_name = queryset.model._meta.pk.attname
+            new_qs = queryset.filter(**{f"{pk_name}__in": new_qs.values(pk_name)})
         
         if annotate_field_list:
             annotate_dict = getattr(self, "annotate_dict", {})
diff --git a/apps/utils/serializers.py b/apps/utils/serializers.py
index 263ec5f2..9a2f7f91 100755
--- a/apps/utils/serializers.py
+++ b/apps/utils/serializers.py
@@ -83,6 +83,7 @@ class ComplexSerializer(serializers.Serializer):
     page = serializers.IntegerField(min_value=0, required=False)
     page_size = serializers.IntegerField(min_value=1, required=False)
     ordering = serializers.CharField(required=False)
+    distinct = serializers.BooleanField(required=False, default=True, label="是否按主键去重")
     querys = serializers.ListField(child=QuerySerializer(
         many=True), label="查询列表", required=False)
     annotate_field_list = serializers.ListField(child=serializers.CharField(), label="RawSQL字段列表", required=False)
diff --git a/changelog.md b/changelog.md
index b811e411..e71ee5d2 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,50 @@
+## 3.1.2026031316
+- feat: 新增功能
+  - 删除-ichat [TianyangZhang]
+  - mpr-物资管理模块（申购单、入库单、物料库存、领用记录） [TianyangZhang]
+  - hrm-人员合同变更 [TianyangZhang]
+  - hrm-migration 修改迁移文件 [TianyangZhang]
+  - qctmat create update 校验唯一 [caoqianming]
+  - gx-hrm-employee 人员导入功能 [TianyangZhang]
+  - hrm-views 修改employee 人员导入 [TianyangZhang]
+  - hrm-employee 增加人员导入功能 [TianyangZhang]
+  - fmlog返回route_material_in [caoqianming]
+  - 加工前不良当合格品处理 [caoqianming]
+  - hrm - 修改 人员调岗后更新部门和岗位 [TianyangZhang]
+  - 人员调岗申请 修改 [TianyangZhang]
+  - hrm-新增人员岗位调动 [TianyangZhang]
+  - wmaterial根据current_merged查询3 [caoqianming]
+  - wmaterial根据current_merged查询2 [caoqianming]
+  - wmaterial根据current_merged查询 [caoqianming]
+  - handoverb添加oinfo_json字段 [caoqianming]
+  - base user增加has_perm筛选条件 [caoqianming]
+  - base 升级后同步数据库 [caoqianming]
+  - 光子添加工段数据统计 [caoqianming]
+  - with_source_near筛选体现在swagger里 [caoqianming]
+  - base 调整asgi导入以保证正常启动 [caoqianming]
+  - wpr 返回wpr_from_ [caoqianming]
+  - base cquery支持add_info_for_list [caoqianming]
+  - wpr 添加筛选条件wpr_from [caoqianming]
+  - wpr_bxerp优化 [caoqianming]
+  - 未有ftest的也触发单个统计 [caoqianming]
+  - 交接记录子项需保证工段/车间一致2 [caoqianming]
+  - 交接记录子项需保证工段/车间一致 [caoqianming]
+  - mlog 并发优化 [caoqianming]
+  - handover可以查看仅交接到车间的记录 [caoqianming]
+  - handover_revert 并发优化 [caoqianming]
+  - handover_submit 并发优化2 [caoqianming]
+  - handover_submit 并发优化 [caoqianming]
+  - base 添加locked_get_or_create [caoqianming]
+  - 查询-n批次从正则改用like以优化性能 [caoqianming]
+  - 固定依赖包 [caoqianming]
+  - 升级依赖包 [caoqianming]
+- fix: 问题修复
+  - avoid duplicate rows in complex reverse queries [caoqianming]
+  - base user_exist完善 [caoqianming]
+  - batchst支持返回source_near修复 [caoqianming]
+  - base complexquerymixin支持add_info_for_list [caoqianming]
+  - base locked_get_or_create优化 [caoqianming]
+  - mlog并发优化的bug [caoqianming]
 ## 3.0.2026010716
 - feat: 新增功能
   - get_shift需要报错 [caoqianming]
diff --git a/server/settings.py b/server/settings.py
index fc46cb06..abc30d47 100755
--- a/server/settings.py
+++ b/server/settings.py
@@ -35,7 +35,7 @@ sys.path.insert(0, os.path.join(BASE_DIR, 'apps'))
 ALLOWED_HOSTS = ['*']
 
 SYS_NAME = '星途工厂综合管理系统'
-SYS_VERSION = '3.0.2026010716'
+SYS_VERSION = '3.1.2026031316'
 X_FRAME_OPTIONS = 'SAMEORIGIN'
 
 # Application definition
diff --git a/update_changelog.sh b/update_changelog.sh
index ce0cfe26..dd7f2b87 100644
--- a/update_changelog.sh
+++ b/update_changelog.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
-# 设置默认版本号 (格式: 3.0.YYYYMMDDHH)
-DEFAULT_VERSION="3.0.$(date '+%Y%m%d%H')"
+# 设置默认版本号 (格式: 3.1.YYYYMMDDHH)
+DEFAULT_VERSION="3.1.$(date '+%Y%m%d%H')"
 
 # 获取参数 (起始tag)
 TARGET_TAG="$1"