diff --git a/src/settings/settings.cpp b/src/settings/settings.cpp
index bca78eb..b1befa7 100644
--- a/src/settings/settings.cpp
+++ b/src/settings/settings.cpp
@@ -52,7 +52,7 @@ void GlobalSetting::initStyleSetting()
 
         connect(settings, &QGSettings::changed, this, [this, settings] (const QString &key) {
             if (key == UKUI_STYLE_NAME_KEY) {
-                m_cache.insert(StyleName, settings->get(key));
+                updateData(StyleName, settings->get(key));
                 Q_EMIT styleChanged(StyleName);
             }
         });
@@ -61,9 +61,16 @@ void GlobalSetting::initStyleSetting()
 
 QVariant GlobalSetting::get(const GlobalSetting::Key& key)
 {
+    QMutexLocker locker(&mutex);
     return m_cache.value(key);
 }
 
+void GlobalSetting::updateData(const GlobalSetting::Key &key, const QVariant &value)
+{
+    QMutexLocker locker(&mutex);
+    m_cache.insert(key, value);
+}
+
 MenuSetting *MenuSetting::instance()
 {
     static MenuSetting setting(nullptr);
@@ -98,11 +105,13 @@ void MenuSetting::initSettings()
 
 QVariant MenuSetting::get(const QString &key)
 {
+    QMutexLocker locker(&mutex);
     return m_cache.value(key, {});
 }
 
 bool MenuSetting::set(const QString &key, const QVariant &value)
 {
+    QMutexLocker locker(&mutex);
     if (m_gSettings) {
         m_gSettings->set(key, value);
 //        m_cache.insert(key,value);
@@ -115,7 +124,9 @@ bool MenuSetting::set(const QString &key, const QVariant &value)
 
 void MenuSetting::updateValue(const QString &key)
 {
+    mutex.lock();
     m_cache.insert(key, m_gSettings->get(key));
+    mutex.unlock();
     Q_EMIT changed(key);
 }
 
diff --git a/src/settings/settings.h b/src/settings/settings.h
index 2e2bfd2..ed1e631 100644
--- a/src/settings/settings.h
+++ b/src/settings/settings.h
@@ -22,6 +22,8 @@
 #include <QObject>
 #include <QGSettings>
 #include <QVariant>
+#include <QMutex>
+#include <QMutexLocker>
 
 #define UKUI_STYLE_VALUE_DARK    "ukui-dark"
 #define UKUI_STYLE_VALUE_LIGHT   "ukui-light"
@@ -55,8 +57,10 @@ Q_SIGNALS:
 private:
     explicit GlobalSetting(QObject *parent = nullptr);
     void initStyleSetting();
+    void updateData(const GlobalSetting::Key& key, const QVariant &value);
 
 private:
+    QMutex mutex;
     QMap<GlobalSetting::Key, QVariant> m_cache;
 };
 
@@ -83,6 +87,7 @@ private:
     void initSettings();
 
 private:
+    QMutex mutex;
     QMap<QString, QVariant> m_cache;
     QGSettings *m_gSettings{nullptr};
 };