diff --git a/libsearch/index/basic-indexer.cpp b/libsearch/index/basic-indexer.cpp
index 17631bd..c6b69f3 100644
--- a/libsearch/index/basic-indexer.cpp
+++ b/libsearch/index/basic-indexer.cpp
@@ -29,13 +29,12 @@ BasicIndexer::BasicIndexer(const QString& filePath): m_filePath(filePath)
 bool BasicIndexer::index()
 {
     QFileInfo info = QFileInfo(m_filePath);
-
     //添加数据
     m_document.setData(m_filePath);
     //唯一term
     m_document.setUniqueTerm(FileUtils::makeDocUterm(m_filePath));
     //上层文件夹term，用于在上层文件夹删除时删除自己
-    m_document.addTerm(FileUtils::makeDocUterm(m_filePath.section("/", 0, -2, QString::SectionIncludeLeadingSep)));
+    m_document.addTerm("PARENTTERM" + FileUtils::makeDocUterm(m_filePath.section("/", 0, -2, QString::SectionIncludeLeadingSep)));
     //1-目录， 0-文件
     m_document.addValue(1, QString((info.isDir() && (!info.isSymLink())) ? "1" : "0"));
     //修改时间
diff --git a/libsearch/index/file-content-indexer.cpp b/libsearch/index/file-content-indexer.cpp
index 368696e..81628ac 100644
--- a/libsearch/index/file-content-indexer.cpp
+++ b/libsearch/index/file-content-indexer.cpp
@@ -51,7 +51,7 @@ bool fileContentIndexer::index()
     term.shrink_to_fit();
 
     m_document.setUniqueTerm(FileUtils::makeDocUterm(m_filePath));
-    m_document.addTerm(FileUtils::makeDocUterm(m_filePath.section("/", 0, -2, QString::SectionIncludeLeadingSep)));
+    m_document.addTerm("PARENTTERM" + FileUtils::makeDocUterm(m_filePath.section("/", 0, -2, QString::SectionIncludeLeadingSep)));
     m_document.addValue(1, m_filePath);
     m_document.addValue(2, suffix);
     m_document.setIndexTime(info.lastModified().toString("yyyyMMddHHmmsszzz"));
diff --git a/libsearch/index/first-run-indexer.cpp b/libsearch/index/first-run-indexer.cpp
index 35d5ce2..9b0aa41 100644
--- a/libsearch/index/first-run-indexer.cpp
+++ b/libsearch/index/first-run-indexer.cpp
@@ -141,7 +141,6 @@ void FirstRunIndexer::basicIndex()
             qDebug() << indexTimes.size() << "documents need remove.";
             for(std::string uniqueTerm : indexTimes.keys()) {
                 basicDb.removeDocument(uniqueTerm);
-                basicDb.setMetaData(uniqueTerm, "");
             }
             basicDb.commit();
         }
@@ -231,7 +230,6 @@ void FirstRunIndexer::contentIndex()
             qDebug() << indexTimes.size() << "documents need remove";
             for(std::string uniqueTerm : indexTimes.keys()) {
                 contentDb.removeDocument(uniqueTerm);
-                contentDb.setMetaData(uniqueTerm, "");
             }
             contentDb.commit();
         }
diff --git a/libsearch/index/index-scheduler.cpp b/libsearch/index/index-scheduler.cpp
index 180f565..6fd2b51 100644
--- a/libsearch/index/index-scheduler.cpp
+++ b/libsearch/index/index-scheduler.cpp
@@ -133,7 +133,7 @@ FirstRunIndexer::Targets IndexScheduler::checkAndRebuild()
             && m_config->isFileIndexEnable()) {
         qDebug() << "Content database need rebuild";
         target |= FirstRunIndexer::Target::Content;
-        m_statusRecorder->setStatus(INDEX_DATABASE_STATE_KEY, IndexStatusRecorder::State::Initializing);
+        m_statusRecorder->setStatus(CONTENT_INDEX_DATABASE_STATE_KEY, IndexStatusRecorder::State::Initializing);
     }
     startIndexJob(mode, target);
     return target;
diff --git a/libsearch/index/index-updater.cpp b/libsearch/index/index-updater.cpp
index eff61d2..27cf5f3 100644
--- a/libsearch/index/index-updater.cpp
+++ b/libsearch/index/index-updater.cpp
@@ -45,6 +45,9 @@ void IndexUpdater::UpdateIndex()
             if(file.shouldRemoveIndex()) {
                 qDebug() << "| remove:" <<file.path();
                 basicDb.removeDocument(file.path());
+                if(file.isDir()) {
+                    basicDb.removeChildrenDocument(file.path());
+                }
             } else {
                 qDebug() << "| index:" <<file.path();
                 BasicIndexer indexer(file.path());
@@ -80,12 +83,12 @@ void IndexUpdater::UpdateIndex()
             if(file.shouldRemoveIndex()) {
                 qDebug() << "| remove:" <<file.path();
                 if(file.isDir()) {
-                    contentDb.removeDocument(file.path());
+                    contentDb.removeChildrenDocument(file.path());
                 } else if(true == suffixMap[suffix]) {
                     contentDb.removeDocument(file.path());
                 }
             } else if(true == suffixMap[suffix] && !file.isDir()) {
-                if(FileUtils::isEncrypedOrUnsupport(file.path(), suffix)) {
+                if(FileUtils::isEncrypedOrUnsupport(file.path(), suffix) && file.isModified()) {
                     contentDb.removeDocument(file.path());
                     continue;
                 }
diff --git a/libsearch/index/writable-database.cpp b/libsearch/index/writable-database.cpp
index c52c1e2..3cd6b96 100644
--- a/libsearch/index/writable-database.cpp
+++ b/libsearch/index/writable-database.cpp
@@ -74,7 +74,7 @@ bool WritableDatabase::open()
     }
     QDir database(m_path);
     if(!database.exists()) {
-        qDebug() << "Create basic writable database" << m_path<< database.mkpath(m_path);
+        qDebug() << "Create writable database" << m_path<< database.mkpath(m_path);
     }
     try {
         m_xpDatabase = new Xapian::WritableDatabase(m_path.toStdString(), Xapian::DB_CREATE_OR_OPEN);
@@ -145,7 +145,13 @@ void WritableDatabase::removeDocument(const QString &path)
 
 void WritableDatabase::removeDocument(const std::string uniqueTerm)
 {
-    DATABASE_TRY(m_xpDatabase->delete_document(uniqueTerm);)
+    DATABASE_TRY(m_xpDatabase->delete_document(uniqueTerm);
+            m_xpDatabase->set_metadata(uniqueTerm, "");)
+}
+
+void WritableDatabase::removeChildrenDocument(const QString &path)
+{
+    DATABASE_TRY(m_xpDatabase->delete_document("PARENTTERM" + FileUtils::makeDocUterm(path));)
 }
 
 void WritableDatabase::setMetaData(const QString &key, const QString &value)
diff --git a/libsearch/index/writable-database.h b/libsearch/index/writable-database.h
index 1f13b38..851a732 100644
--- a/libsearch/index/writable-database.h
+++ b/libsearch/index/writable-database.h
@@ -46,6 +46,7 @@ public:
     void addDocument(const Document& doc);
     void removeDocument(const QString& path);
     void removeDocument(const std::string uniqueTerm);
+    void removeChildrenDocument(const QString& path);
     void setMetaData(const QString& key, const QString& value);
     void setMetaData(const std::string& key, const std::string& value);
     const std::string getMetaData(const std::string &key);