diff --git a/ukui-search-service-dir-manager/dirwatcher/dir-watcher.cpp b/ukui-search-service-dir-manager/dirwatcher/dir-watcher.cpp
index 206a367..637e0da 100644
--- a/ukui-search-service-dir-manager/dirwatcher/dir-watcher.cpp
+++ b/ukui-search-service-dir-manager/dirwatcher/dir-watcher.cpp
@@ -434,24 +434,82 @@ int DirWatcher::appendIndexableListItem(const QString &path)
         }
     }
 
-    //处理自动挂载子卷下的目录，目前方案将其合并为一个，只保留了mountpoint下的目录
+    //处理自动挂载子卷下的目录
     for (auto t = m_infoOfSubvolume.constBegin(); t != m_infoOfSubvolume.constEnd(); t++) {
         QString mountPoint = t.value();
         QString spec = t.key();
-        QString tmp = path;
-
+        //要添加目录下存在子卷(要添加/data，但挂到/home的/data/home是子卷），若添加了/home则将/data/home排除
         if (spec.startsWith(path + "/")) {
-            blackList << spec;
+            for (QString &indexDir : m_indexableDirList) {
+                if (indexDir == mountPoint || mountPoint.startsWith(indexDir + "/")) {
+                    blackList << spec;
+                }
+                if (indexDir.startsWith(mountPoint + "/")) {
+                    blackList << indexDir.replace(0, mountPoint.length(), spec);
+                }
+            }
+
+        }
+        //要添加目录下存在子卷挂载点，同上
+        if (mountPoint.startsWith(path + "/")) {
+
+            for (QString &indexDir : m_indexableDirList) {
+                if (indexDir == spec || spec.startsWith(indexDir + "/")) {
+                    blackList << mountPoint;
+                }
+                if (indexDir.startsWith(spec + "/")) {
+                    blackList << indexDir.replace(0, spec.length(), mountPoint);
+                }
+            }
         }
 
-        if (path.startsWith(spec + "/") or path == spec) {
-            tmp.replace(0, spec.length(), mountPoint);
-            if (this->handleIndexItemAppend(tmp, blackList)) {
-                qDebug() << QString("The path:%1 has been replaced into %2").arg(path, tmp);
-            } else {
-                resultCode = -1;
+        //要添加的目录是子卷或在子卷下（/data/home or /data/home/xxx）
+        if (path.startsWith(spec + "/") || path == spec) {
+            for (QString &indexDir : m_indexableDirList) {
+                //已添加挂载点或其上层目录
+                if (mountPoint.startsWith(indexDir + "/") || indexDir == mountPoint) {
+                    qCritical() << "Fail to add" << path << "The mount point or its father:" << indexDir << "has been added";
+                    resultCode = -3;
+                    return resultCode;
+                }
+                //已添加挂载点下其他目录
+                if (indexDir.startsWith(mountPoint + "/")) {
+
+                    QString tmp = indexDir;
+                    tmp.replace(0, mountPoint.length(), spec);
+                    if (tmp == path) {
+                        qCritical() << "Fail to add" << path << "The same path which is in the subvolume has been added.";
+                        resultCode = -4;
+                        return resultCode;
+                    } else if (tmp.startsWith(path + "/")) {//已添加的子卷子目录替换前缀后在要添加目录下
+                        blackList << tmp;
+                    }
+                }
+            }
+        }
+
+        //要添加的目录是挂载点或在挂载点下（/home or /home/xxx）
+        if (path.startsWith(mountPoint + "/") || path == mountPoint) {
+            for (QString &indexDir : m_indexableDirList) {
+                //已添加子卷或其上层目录
+                if (spec.startsWith(indexDir + "/") || indexDir == spec) {
+                    qCritical() << "Fail to add" << path << "The subvolume or its father:" << indexDir << "has been added";
+                    resultCode = -3;
+                    return resultCode;
+                }
+                //已添加子卷下其他目录
+                if (indexDir.startsWith(spec + "/")) {
+                    QString tmp = indexDir;
+                    tmp.replace(0, spec.length(), mountPoint);
+                    if (tmp == path) {
+                        qCritical() << "Fail to add" << path << "The same path which is in the mount point has been added.";
+                        resultCode = -4;
+                        return resultCode;
+                    } else if (tmp.startsWith(path + "/")) {//已添加的子卷子目录替换前缀后在要添加目录下
+                        blackList << tmp;
+                    }
+                }
             }
-            return resultCode;
         }
     }