diff --git a/ccdi-project/src/main/java/com/ruoyi/ccdi/project/service/impl/CcdiModelParamServiceImpl.java b/ccdi-project/src/main/java/com/ruoyi/ccdi/project/service/impl/CcdiModelParamServiceImpl.java
index 1e057f2..927e552 100644
--- a/ccdi-project/src/main/java/com/ruoyi/ccdi/project/service/impl/CcdiModelParamServiceImpl.java
+++ b/ccdi-project/src/main/java/com/ruoyi/ccdi/project/service/impl/CcdiModelParamServiceImpl.java
@@ -309,10 +309,33 @@ public class CcdiModelParamServiceImpl implements ICcdiModelParamService {
 
                 // 如果是首次保存（configType=default),需要复制所有模型的系统默认参数
                 if ("default".equals(project.getConfigType())) {
-                    for (ModelParamGroupDTO modelGroup : saveAllDTO.getModels()) {
-                        copyDefaultParamsToProject(projectId, modelGroup.getModelCode());
+                    // 1. 查询所有系统默认参数（所有模型的所有参数）
+                    List<CcdiModelParam> allDefaultParams = modelParamMapper.selectByProjectId(0L);
+                    if (allDefaultParams.isEmpty()) {
+                        log.warn("系统默认参数为空");
+                        return;
                     }
 
+                    // 2. 批量复制所有默认参数到项目
+                    List<CcdiModelParam> projectParams = new ArrayList<>();
+                    for (CcdiModelParam param : allDefaultParams) {
+                        CcdiModelParam newParam = new CcdiModelParam();
+                        BeanUtils.copyProperties(param, newParam);
+                        newParam.setProjectId(projectId);
+                        // 清空审计字段，让 MyBatis Plus 自动填充
+                        newParam.setCreateBy(null);
+                        newParam.setCreateTime(null);
+                        newParam.setUpdateBy(null);
+                        newParam.setUpdateTime(null);
+                        projectParams.add(newParam);
+                    }
+
+                    // 3. 批量插入
+                    modelParamMapper.insertBatch(projectParams);
+
+                    log.info("复制所有系统默认参数到项目成功， projectId={}, count={}",
+                        projectId, projectParams.size());
+
                     // 更新项目配置类型为 custom
                     project.setConfigType("custom");
                     projectMapper.updateById(project);