diff --git a/libsearch/file-utils.cpp b/libsearch/file-utils.cpp
index d28edfc..2d4e6d3 100644
--- a/libsearch/file-utils.cpp
+++ b/libsearch/file-utils.cpp
@@ -892,6 +892,25 @@ QIcon FileUtils::iconFromTheme(const QString &name, const QIcon &iconDefault)
     return QIcon::fromTheme(name, iconDefault);
 }
 
+bool FileUtils::isOpenXMLFileEncrypted(QString &path)
+{
+    QFile file(path);
+    file.open(QIODevice::ReadOnly|QIODevice::Text);
+    QByteArray encrypt = file.read(4);
+    file.close();
+    if (encrypt.length() < 4) {
+        qDebug() << "Reading file error!" << path;
+        return true;
+    }
+    //比较前四位是否为对应值来判断OpenXML类型文件是否加密
+    if (encrypt[0] == 0x50 && encrypt[1] == 0x4b && encrypt[2] == 0x03 && encrypt[3] == 0x04) {
+        return false;
+    } else {
+        qDebug() << "Encrypt!" << path;
+        return true;
+    }
+}
+
 QString FileUtils::getHtmlText(const QString &text, const QString &keyword)
 {
     QString htmlString;
diff --git a/libsearch/file-utils.h b/libsearch/file-utils.h
index 7aa2e5a..671a426 100644
--- a/libsearch/file-utils.h
+++ b/libsearch/file-utils.h
@@ -96,6 +96,7 @@ public:
     static QString escapeHtml(const QString & str);
     static QString chineseSubString(const std::string &myStr,int start,int length);
     static QIcon iconFromTheme(const QString& name, const QIcon &iconDefault);
+    static bool isOpenXMLFileEncrypted(QString &path);
     static size_t _max_index_count;
     static size_t _current_index_count; //this one has been Abandoned,do not use it.
     static unsigned short _index_status;
diff --git a/libsearch/parser/binary-parser.cpp b/libsearch/parser/binary-parser.cpp
index 040a2cb..fedf507 100644
--- a/libsearch/parser/binary-parser.cpp
+++ b/libsearch/parser/binary-parser.cpp
@@ -4884,7 +4884,7 @@ bool KBinaryParser::read8DocText(FILE *pFile, const ppsInfoType *pPPS,
     ulBeginTextInfo = ulGetLong(0x1a2, aucHeader);	/* fcClx */
     tTextInfoLen = (size_t)ulGetLong(0x1a6, aucHeader);	/* lcbClx */
     ulEncryptInfo = ulGetLong(0x0a, aucHeader);
-    if(ulEncryptInfo & 0x0100) {
+    if(ulEncryptInfo & BIT(8)) {
         qDebug() << "Encrypt file:" << m_strFileName << (size_t)ulEncryptInfo;
         return false;
     }