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 1e20bd0..67a3897 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
@@ -152,4 +152,44 @@ public class CcdiModelParamServiceImpl implements ICcdiModelParamService {
             modelParamMapper.batchUpdateParamValues(updateList);
         }
     }
+
+    /**
+     * 复制系统默认参数到项目
+     *
+     * @param projectId 项目ID
+     * @param modelCode 模型编码
+     * @return 复制的参数数量
+     */
+    private int copyDefaultParamsToProject(Long projectId, String modelCode) {
+        // 查询系统默认参数
+        List<CcdiModelParam> defaultParams = modelParamMapper.selectByProjectAndModel(0L, modelCode);
+
+        if (defaultParams.isEmpty()) {
+            log.warn("系统默认参数为空，modelCode={}", modelCode);
+            return 0;
+        }
+
+        // 复制到项目
+        List<CcdiModelParam> projectParams = defaultParams.stream()
+            .map(param -> {
+                CcdiModelParam newParam = new CcdiModelParam();
+                BeanUtils.copyProperties(param, newParam);
+                newParam.setId(null); // 清空ID，让数据库自动生成
+                newParam.setProjectId(projectId);
+                newParam.setCreateBy(null); // 清空审计字段，让 MyBatis Plus 自动填充
+                newParam.setCreateTime(null);
+                newParam.setUpdateBy(null);
+                newParam.setUpdateTime(null);
+                return newParam;
+            })
+            .collect(Collectors.toList());
+
+        // 批量插入
+        int count = modelParamMapper.insertBatch(projectParams);
+
+        log.info("复制系统默认参数到项目成功，projectId={}, modelCode={}, count={}",
+            projectId, modelCode, count);
+
+        return count;
+    }
 }