diff --git a/src/main/java/com/gxwebsoft/ai/controller/AiCloudDocController.java b/src/main/java/com/gxwebsoft/ai/controller/AiCloudDocController.java
index 2376b81..79fec5e 100644
--- a/src/main/java/com/gxwebsoft/ai/controller/AiCloudDocController.java
+++ b/src/main/java/com/gxwebsoft/ai/controller/AiCloudDocController.java
@@ -64,8 +64,8 @@ public class AiCloudDocController extends BaseController {
     @Operation(summary = "根据id查询AI云文档目录表")
     @GetMapping("/{id}")
     public ApiResult<AiCloudDoc> get(@PathVariable("id") Integer id) {
-        // 使用关联查询
-        return success(aiCloudDocService.getByIdRel(id));
+        // 使用关联查询，不限制 projectId
+        return success(aiCloudDocService.getByIdRel(id, null));
     }
 
     //@PreAuthorize("hasAuthority('ai:aiCloudDoc:list')")
@@ -87,9 +87,13 @@ public class AiCloudDocController extends BaseController {
             aiCloudDoc.setUserId(loginUser.getUserId());
         }
         if(aiCloudDoc.getParentId()>0) {
-        	AiCloudDoc aiCloudDocParent = aiCloudDocService.getByIdRel(aiCloudDoc.getParentId());
-        	aiCloudDoc.setCategoryId(aiCloudDocParent.getCategoryId());
-        	aiCloudDoc.setCompanyId(aiCloudDocParent.getCompanyId());
+        	AiCloudDoc aiCloudDocParent = aiCloudDocService.getByIdRel(aiCloudDoc.getParentId(), aiCloudDoc.getProjectId());
+        	if(aiCloudDocParent != null) {
+        		aiCloudDoc.setCategoryId(aiCloudDocParent.getCategoryId());
+        		aiCloudDoc.setCompanyId(aiCloudDocParent.getCompanyId());
+        	} else {
+        		return fail("父文档不存在或无权访问");
+        	}
         }
         // 设置 docType
         if (aiCloudDoc.getProjectId() != null && aiCloudDoc.getProjectId() != 0) {
diff --git a/src/main/java/com/gxwebsoft/ai/service/AiCloudDocService.java b/src/main/java/com/gxwebsoft/ai/service/AiCloudDocService.java
index 1f2d77a..702e90d 100644
--- a/src/main/java/com/gxwebsoft/ai/service/AiCloudDocService.java
+++ b/src/main/java/com/gxwebsoft/ai/service/AiCloudDocService.java
@@ -34,9 +34,10 @@ public interface AiCloudDocService extends IService<AiCloudDoc> {
      * 根据id查询
      *
      * @param id ID
+     * @param projectId 项目ID
      * @return AiCloudDoc
      */
-    AiCloudDoc getByIdRel(Integer id);
+    AiCloudDoc getByIdRel(Integer id, Integer projectId);
     
     /**
      * 根据目录ID获取本身及所有子孙目录
diff --git a/src/main/java/com/gxwebsoft/ai/service/impl/AiCloudDocServiceImpl.java b/src/main/java/com/gxwebsoft/ai/service/impl/AiCloudDocServiceImpl.java
index 25c4442..5cf4c4e 100644
--- a/src/main/java/com/gxwebsoft/ai/service/impl/AiCloudDocServiceImpl.java
+++ b/src/main/java/com/gxwebsoft/ai/service/impl/AiCloudDocServiceImpl.java
@@ -79,9 +79,12 @@ public class AiCloudDocServiceImpl extends ServiceImpl<AiCloudDocMapper, AiCloud
     }
 
     @Override
-    public AiCloudDoc getByIdRel(Integer id) {
+    public AiCloudDoc getByIdRel(Integer id, Integer projectId) {
         AiCloudDocParam param = new AiCloudDocParam();
         param.setId(id);
+        if (projectId != null) {
+            param.setProjectId(projectId);
+        }
         return param.getOne(baseMapper.selectListRel(param));
     }