diff --git a/plugins/datetime/datetimeplugin.cpp b/plugins/datetime/datetimeplugin.cpp
index 9e6bfc4f7..28405ea14 100644
--- a/plugins/datetime/datetimeplugin.cpp
+++ b/plugins/datetime/datetimeplugin.cpp
@@ -75,6 +75,15 @@ const QString DatetimePlugin::itemContextMenu(const QString &itemKey)
     QList<QVariant> items;
     items.reserve(1);
 
+    QMap<QString, QVariant> settings;
+    settings["itemId"] = "settings";
+    if (m_centralWidget->is24HourFormat())
+        settings["itemText"] = tr("12 Hour Time");
+    else
+        settings["itemText"] = tr("24 Hour Time");
+    settings["isActive"] = true;
+    items.push_back(settings);
+
     QMap<QString, QVariant> open;
     open["itemId"] = "open";
     open["itemText"] = tr("Time Settings");
@@ -92,10 +101,12 @@ const QString DatetimePlugin::itemContextMenu(const QString &itemKey)
 void DatetimePlugin::invokedMenuItem(const QString &itemKey, const QString &menuId, const bool checked)
 {
     Q_UNUSED(itemKey)
-    Q_UNUSED(menuId)
     Q_UNUSED(checked)
 
-    QProcess::startDetached("dde-control-center", QStringList() << "datetime");
+    if (menuId == "open")
+        QProcess::startDetached("dde-control-center", QStringList() << "datetime");
+    else
+        m_centralWidget->toggleHourFormat();
 }
 
 void DatetimePlugin::updateCurrentTimeString()
diff --git a/plugins/datetime/datetimewidget.cpp b/plugins/datetime/datetimewidget.cpp
index cda0979aa..77309ad78 100644
--- a/plugins/datetime/datetimewidget.cpp
+++ b/plugins/datetime/datetimewidget.cpp
@@ -8,11 +8,25 @@
 #include <QMouseEvent>
 
 DatetimeWidget::DatetimeWidget(QWidget *parent)
-    : QWidget(parent)
+    : QWidget(parent),
+
+    m_settings("deepin", "dde-dock-datetime"),
+
+    m_24HourFormat(m_settings.value("24HourFormat").toBool())
 {
 
 }
 
+void DatetimeWidget::toggleHourFormat()
+{
+    m_24HourFormat = !m_24HourFormat;
+
+    m_settings.setValue("24HourFormat", m_24HourFormat);
+
+    m_cachedTime.clear();
+    update();
+}
+
 QSize DatetimeWidget::sizeHint() const
 {
     QFontMetrics fm(qApp->font());
@@ -39,11 +53,11 @@ void DatetimeWidget::paintEvent(QPaintEvent *e)
     if (displayMode == Dock::Efficient)
     {
         painter.setPen(Qt::white);
-        painter.drawText(rect(), Qt::AlignCenter, current.toString("HH:mm"));
+        painter.drawText(rect(), Qt::AlignCenter, current.toString(m_24HourFormat ? "hh:mm" : "hh:mm A"));
         return;
     }
 
-    const QString currentTimeString = current.toString("HHmm");
+    const QString currentTimeString = current.toString(m_24HourFormat ? "hhmm" : "hhmma");
     // check cache valid
     if (m_cachedTime != currentTimeString)
     {
diff --git a/plugins/datetime/datetimewidget.h b/plugins/datetime/datetimewidget.h
index fa74f873d..91763de76 100644
--- a/plugins/datetime/datetimewidget.h
+++ b/plugins/datetime/datetimewidget.h
@@ -2,6 +2,7 @@
 #define DATETIMEWIDGET_H
 
 #include <QWidget>
+#include <QSettings>
 
 class DatetimeWidget : public QWidget
 {
@@ -10,9 +11,14 @@ class DatetimeWidget : public QWidget
 public:
     explicit DatetimeWidget(QWidget *parent = 0);
 
+    bool is24HourFormat() const { return m_24HourFormat; }
+
 signals:
     void requestContextMenu() const;
 
+public slots:
+    void toggleHourFormat();
+
 private:
     QSize sizeHint() const;
     void resizeEvent(QResizeEvent *e);
@@ -24,6 +30,8 @@ private:
 private:
     QPixmap m_cachedIcon;
     QString m_cachedTime;
+    QSettings m_settings;
+    bool m_24HourFormat;
 };
 
 #endif // DATETIMEWIDGET_H