diff --git a/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/institution/EvalProcessControlExecutor.java b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/institution/EvalProcessControlExecutor.java
index aa27e06..632f9dd 100644
--- a/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/institution/EvalProcessControlExecutor.java
+++ b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/institution/EvalProcessControlExecutor.java
@@ -502,15 +502,21 @@ public class EvalProcessControlExecutor implements EvalProcessControlApi {
      */
     private void upsertArchivedProjectDocs(Long projectId, EvalProjectEntity project) {
         List<EvalProjectFileCO> files = listProjectFiles(projectId).getData();
-        List<EvalProjectDocMaterialItemCO> archivedItems = CollectionUtils.isEmpty(files)
-                ? new ArrayList<>()
-                : files.stream().map(f -> {
-            EvalProjectDocMaterialItemCO item = new EvalProjectDocMaterialItemCO();
-            item.setMaterialName(f.getMaterialName());
-            item.setProjectDocUrl(f.getProjectDocUrl());
-            item.setMaterialType(MaterialCategory.ARCHIVED.getVal());
-            return item;
-        }).collect(Collectors.toList());
+        // 将每个文件 projectDocUrl 中的 JSON 数组扁平化：数组内每个文件对象拆分为独立的资料条目
+        List<EvalProjectDocMaterialItemCO> archivedItems = new ArrayList<>();
+        if (!CollectionUtils.isEmpty(files)) {
+            for (EvalProjectFileCO f : files) {
+                List<JSONObject> urlObjects = parseFileUrlObjects(f.getProjectDocUrl());
+                for (JSONObject obj : urlObjects) {
+                    EvalProjectDocMaterialItemCO item = new EvalProjectDocMaterialItemCO();
+                    String name = obj.getStr("name");
+                    item.setMaterialName(StringUtils.hasText(name) ? name : f.getMaterialName());
+                    item.setProjectDocUrl(obj.getStr("url"));
+                    item.setMaterialType(MaterialCategory.ARCHIVED.getVal());
+                    archivedItems.add(item);
+                }
+            }
+        }
 
         EvalProjectDocDO docDO = evalProjectDocMapper.selectOne(new LambdaQueryWrapper<EvalProjectDocDO>()
                 .select(EvalProjectDocDO::getId, EvalProjectDocDO::getProjectDocUrl)
@@ -547,6 +553,27 @@ public class EvalProcessControlExecutor implements EvalProcessControlApi {
         }
     }
 
+    /**
+     * 将文件 projectDocUrl（JSON 数组字符串，如 [{"url":"...","name":"..."}]）解析为对象列表。
+     * 非数组、解析失败或为空时返回空列表。
+     */
+    private List<JSONObject> parseFileUrlObjects(String projectDocUrl) {
+        List<JSONObject> result = new ArrayList<>();
+        if (!StringUtils.hasText(projectDocUrl)) {
+            return result;
+        }
+        try {
+            JSONArray array = JSONUtil.parseArray(projectDocUrl);
+            for (Object obj : array) {
+                if (obj instanceof JSONObject) {
+                    result.add((JSONObject) obj);
+                }
+            }
+        } catch (Exception ignored) {
+        }
+        return result;
+    }
+
     /**
      * 验证项目所有签字任务是否已完成（taskStatusCode=2 已签）。
      * 无签字任务或存在未完成/未作废的任务均视为未完成。