diff --git a/gvsds/apps/gerp/form_service.py b/gvsds/apps/gerp/form_service.py
index a916a9f4..a653e9cc 100644
--- a/gvsds/apps/gerp/form_service.py
+++ b/gvsds/apps/gerp/form_service.py
@@ -1247,6 +1247,11 @@ class FormService(FormServiceBase):
                 dup_qs = dup_qs.filter(CompanyUUID=urw_company)
             if dup_qs.exists():
                 return {'error': f'该用户-角色对已在此{target_label}中', 'field': 'UserRoleUUID'}
+        # CompanyInfo 唯一性：同一租户仅一条企业信息（epcreate 是"完善本企业"向导，
+        # 防重复提交产生多条；修改走租户详情编辑）
+        if table_name == 'CompanyInfo' and self.current_tenant_uuid:
+            if CompanyInfo.objects.filter(TenantUUID_id=self.current_tenant_uuid).exists():
+                return {'error': '该租户已存在企业信息，如需修改请在租户详情中编辑', 'field': 'Table'}
         pk_field_name = model._meta.pk.name if model._meta.pk else None
         # 关联表主键由后端强制生成（UserRole/UserRoleWorkgroup/UserRoleDepartment/WorkgroupRole 等）：
         # 前端新增时若携带主键（如编辑表单回填），直接覆盖，避免撞主键报 1062 Duplicate