diff --git a/plugins/dde-dock/bluetooth/CMakeLists.txt b/plugins/dde-dock/bluetooth/CMakeLists.txt
index 88f93db9e..13d5b1761 100644
--- a/plugins/dde-dock/bluetooth/CMakeLists.txt
+++ b/plugins/dde-dock/bluetooth/CMakeLists.txt
@@ -64,3 +64,5 @@ target_link_libraries(${PLUGIN_NAME} PRIVATE
 
 install(TARGETS ${PLUGIN_NAME} LIBRARY DESTINATION lib/dde-dock/plugins/system-trays)
 install(FILES "resources/dcc-bluetooth.dci" DESTINATION share/dde-dock/icons/dcc-setting)
+
+dtk_add_config_meta_files(APPID org.deepin.dde.tray-loader FILES ../configs/org.deepin.dde.dock.plugin.bluetooth.json)
diff --git a/plugins/dde-dock/bluetooth/componments/bluetoothadapteritem.cpp b/plugins/dde-dock/bluetooth/componments/bluetoothadapteritem.cpp
index 5ebcbb40f..76963aab7 100644
--- a/plugins/dde-dock/bluetooth/componments/bluetoothadapteritem.cpp
+++ b/plugins/dde-dock/bluetooth/componments/bluetoothadapteritem.cpp
@@ -22,6 +22,30 @@
 #include <QBoxLayout>
 #include <QStandardItemModel>
 
+namespace {
+
+constexpr int DefaultScanIntervalSeconds = 5;
+
+int scanIntervalMs()
+{
+    bool ok = false;
+    int seconds = DConfigHelper::instance()->getConfig(
+        "org.deepin.dde.tray-loader",
+        "org.deepin.dde.dock.plugin.bluetooth",
+        QString(),
+        "scanInterval",
+        DefaultScanIntervalSeconds).toInt(&ok);
+
+    // DConfig does not enforce a range, and QTimer treats 0 as "fire
+    // immediately", which would restart discovery as soon as it finishes.
+    if (!ok || seconds <= 0)
+        seconds = DefaultScanIntervalSeconds;
+
+    return seconds * 1000;
+}
+
+} // namespace
+
 BluetoothDeviceItem::BluetoothDeviceItem(QStyle *style, const Device *device, PluginListView *parent)
     : m_style(style)
     , m_device(device)
@@ -404,9 +428,9 @@ void BluetoothAdapterItem::initUi()
 
 void BluetoothAdapterItem::initConnect()
 {
-    m_scanTimer->setInterval(DConfigHelper::instance()->getConfig("org.deepin.dde.dock", "org.deepin.dde.dock.plugin.bluetooth", "", "scanInterval", 5).toInt() * 1000);
-    DConfigHelper::instance()->bind("org.deepin.dde.dock", "org.deepin.dde.dock.plugin.bluetooth", "", this, "scanInterval", [this] (const QString&, const QVariant&, QObject*) {
-        m_scanTimer->setInterval(DConfigHelper::instance()->getConfig("org.deepin.dde.dock", "org.deepin.dde.dock.plugin.bluetooth", "", "scanInterval", 5).toInt() * 1000);
+    m_scanTimer->setInterval(scanIntervalMs());
+    DConfigHelper::instance()->bind("org.deepin.dde.tray-loader", "org.deepin.dde.dock.plugin.bluetooth", "", this, "scanInterval", [this] (const QString&, const QVariant&, QObject*) {
+        m_scanTimer->setInterval(scanIntervalMs());
     });
     connect(m_scanTimer, &QTimer::timeout, this, [this] {
         if (isVisible())