diff --git a/panels/dock/tray/package/StashedItemPositioner.qml b/panels/dock/tray/package/StashedItemPositioner.qml
index 0179c55ab..cc4b595ed 100644
--- a/panels/dock/tray/package/StashedItemPositioner.qml
+++ b/panels/dock/tray/package/StashedItemPositioner.qml
@@ -8,7 +8,13 @@ import org.deepin.ds.dock.tray 1.0 as DDT
 
 Control {
     id: root
-    property bool itemVisible: !DDT.TraySortOrderModel.isUpdating
+    property bool itemVisible: {
+        // Startup phase: hide all items without triggering animations
+        if (DDT.TraySortOrderModel.startupPhase) {
+            return false
+        }
+        return !DDT.TraySortOrderModel.isUpdating
+    }
 
     spacing: 0
     padding: 0
@@ -21,6 +27,12 @@ Control {
         NumberAnimation { duration: 200; easing.type: Easing.OutQuad }
     }
     states: [
+        State {
+            name: "startup-hidden"
+            when: DDT.TraySortOrderModel.startupPhase
+            PropertyChanges { target: root; opacity: 0.0 }
+            PropertyChanges { target: root; visible: false }
+        },
         State {
             when: root.itemVisible
             PropertyChanges { target: root; opacity: 1.0 }
@@ -33,6 +45,14 @@ Control {
         }
     ]
     transitions: [
+        Transition {
+            from: "startup-hidden"
+            to: "*"
+            SequentialAnimation {
+                PropertyAction { target: root; property: "visible"; value: true }
+                NumberAnimation { property: "opacity"; duration: 300; easing.type: Easing.OutQuad }
+            }
+        },
         Transition {
             to: "item-invisible"
             SequentialAnimation {
diff --git a/panels/dock/tray/package/TrayItemPositioner.qml b/panels/dock/tray/package/TrayItemPositioner.qml
index 47f935804..1a9fa8870 100644
--- a/panels/dock/tray/package/TrayItemPositioner.qml
+++ b/panels/dock/tray/package/TrayItemPositioner.qml
@@ -9,6 +9,11 @@ import org.deepin.ds.dock.tray 1.0 as DDT
 Control {
     id: root
     property bool itemVisible: {
+        // Startup phase: hide all items without triggering animations
+        if (DDT.TraySortOrderModel.startupPhase) {
+            return false
+        }
+        // Update phase: hide to avoid layout flicker
         if (DDT.TraySortOrderModel.isUpdating) {
             return false
         }
@@ -54,6 +59,13 @@ Control {
         NumberAnimation { duration: 200; easing.type: collapsed || !DDT.TraySortOrderModel.isCollapsing ? Easing.OutQuad : Easing.InQuad }
     }
     states: [
+        State {
+            name: "startup-hidden"
+            when: DDT.TraySortOrderModel.startupPhase
+            PropertyChanges { target: root; opacity: 0.0 }
+            PropertyChanges { target: root; scale: 0.8 }
+            PropertyChanges { target: root; visible: false }
+        },
         State {
             when: root.itemVisible
             PropertyChanges { target: root; opacity: 1.0 }
@@ -68,6 +80,17 @@ Control {
         }
     ]
     transitions: [
+        Transition {
+            from: "startup-hidden"
+            to: "*"
+            SequentialAnimation {
+                PropertyAction { target: root; property: "visible"; value: true }
+                ParallelAnimation {
+                    NumberAnimation { property: "opacity"; from: 0.0; to: 1.0; duration: 300; easing.type: Easing.OutQuad }
+                    NumberAnimation { property: "scale"; from: 0.8; to: 1.0; duration: 300; easing.type: Easing.OutBack }
+                }
+            }
+        },
         Transition {
             to: "item-invisible"
             SequentialAnimation {
diff --git a/panels/dock/tray/traysortordermodel.cpp b/panels/dock/tray/traysortordermodel.cpp
index 5d2a7b06a..995275b35 100644
--- a/panels/dock/tray/traysortordermodel.cpp
+++ b/panels/dock/tray/traysortordermodel.cpp
@@ -9,6 +9,7 @@
 #include <QDebug>
 #include <QDBusMessage>
 #include <QDBusConnection>
+#include <QTimer>
 
 #include <DConfig>
 
@@ -63,6 +64,18 @@ TraySortOrderModel::TraySortOrderModel(QObject *parent)
         qDebug() << "actionsAlwaysVisibleChanged";
         updateVisualIndexes();
     });
+    
+    // Startup phase timer: end startup phase after 500ms of no new surfaces
+    m_startupTimer = new QTimer(this);
+    m_startupTimer->setSingleShot(true);
+    m_startupTimer->setInterval(500);
+    connect(m_startupTimer, &QTimer::timeout, this, [this](){
+        if (m_startupPhase) {
+            qDebug() << "Startup phase ended, showing all tray items";
+            setStartupPhase(false);
+        }
+    });
+    
     updateVisualIndexes();
 }
 
@@ -577,6 +590,24 @@ void TraySortOrderModel::onAvailableSurfacesChanged()
     updateVisualIndexes();
     // and also save the current sort order
     saveDataToDConfig();
+    
+    // During startup phase, reset timer on each new surface to batch updates
+    if (m_startupPhase && m_startupTimer) {
+        m_startupTimer->start();
+    }
+}
+
+bool TraySortOrderModel::startupPhase() const
+{
+    return m_startupPhase;
+}
+
+void TraySortOrderModel::setStartupPhase(bool phase)
+{
+    if (m_startupPhase == phase)
+        return;
+    m_startupPhase = phase;
+    emit startupPhaseChanged(phase);
 }
 
 void TraySortOrderModel::handlePluginVisibleChanged(const QString &surfaceId, bool visible)
diff --git a/panels/dock/tray/traysortordermodel.h b/panels/dock/tray/traysortordermodel.h
index 69b1a57ef..21ae1d7c0 100644
--- a/panels/dock/tray/traysortordermodel.h
+++ b/panels/dock/tray/traysortordermodel.h
@@ -7,6 +7,7 @@
 #include "constants.h"
 #include <QQmlEngine>
 #include <QStandardItemModel>
+#include <QTimer>
 
 namespace Dtk {
 namespace Core {
@@ -26,6 +27,7 @@ class TraySortOrderModel : public QStandardItemModel
     Q_PROPERTY(bool isCollapsing MEMBER m_isCollapsing NOTIFY isCollapsingChanged)
     Q_PROPERTY(bool actionsAlwaysVisible MEMBER m_actionsAlwaysVisible NOTIFY actionsAlwaysVisibleChanged)
     Q_PROPERTY(bool isUpdating MEMBER m_isUpdating NOTIFY isUpdatingChanged)
+    Q_PROPERTY(bool startupPhase READ startupPhase WRITE setStartupPhase NOTIFY startupPhaseChanged)
     Q_PROPERTY(QList<QVariantMap> availableSurfaces MEMBER m_availableSurfaces NOTIFY availableSurfacesChanged)
     Q_PROPERTY(QString stagedSurfaceId MEMBER m_stagedSurfaceId NOTIFY stagedDropChanged)
     Q_PROPERTY(int stagedVisualIndex MEMBER m_stagedVisualIndex NOTIFY stagedDropChanged)
@@ -74,12 +76,17 @@ class TraySortOrderModel : public QStandardItemModel
     Q_INVOKABLE void stageDropPosition(const QString &surfaceId, int visualIndex);
     Q_INVOKABLE void commitStagedDrop();
     Q_INVOKABLE void clearStagedDrop();
+    
+    // Startup phase control
+    bool startupPhase() const;
+    Q_INVOKABLE void setStartupPhase(bool phase);
 
 signals:
     void collapsedChanged(bool);
     void isCollapsingChanged(bool);
     void actionsAlwaysVisibleChanged(bool);
     void isUpdatingChanged(bool);
+    void startupPhaseChanged(bool);
     void visualItemCountChanged(int);
     void availableSurfacesChanged(const QList<QVariantMap> &);
     void stagedDropChanged();
@@ -90,7 +97,9 @@ class TraySortOrderModel : public QStandardItemModel
     bool m_isCollapsing = false;
     bool m_actionsAlwaysVisible = false;
     bool m_isUpdating = false;
+    bool m_startupPhase = true;
     std::unique_ptr<Dtk::Core::DConfig> m_dconfig;
+    QTimer *m_startupTimer = nullptr;
     // this is for the plugins that currently available.
     QList<QVariantMap> m_availableSurfaces;
     // these are the sort order data source, it might contain items that are no longer existed.