diff --git a/Source/MetaCoreEditor/Private/MetaCoreBuiltinEditorModule.cpp b/Source/MetaCoreEditor/Private/MetaCoreBuiltinEditorModule.cpp
index 3155305..e812eb6 100644
--- a/Source/MetaCoreEditor/Private/MetaCoreBuiltinEditorModule.cpp
+++ b/Source/MetaCoreEditor/Private/MetaCoreBuiltinEditorModule.cpp
@@ -750,6 +750,16 @@ void MetaCoreReimportProjectAsset(MetaCoreEditorContext& editorContext, const Me
            !ImGui::IsPopupOpen(nullptr, ImGuiPopupFlags_AnyPopup);
 }
 
+void MetaCoreSelectAllSceneObjects(MetaCoreEditorContext& editorContext) {
+    const std::vector<MetaCoreId> orderedIds = editorContext.GetScene().BuildHierarchyPreorder();
+    if (orderedIds.empty()) {
+        editorContext.ClearSelection();
+        return;
+    }
+
+    editorContext.SetSelection(orderedIds, orderedIds.back());
+}
+
 void MetaCoreHandleGlobalEditorShortcuts(MetaCoreEditorContext& editorContext) {
     if (!MetaCoreCanHandleGlobalEditorShortcuts()) {
         return;
@@ -784,6 +794,11 @@ void MetaCoreHandleGlobalEditorShortcuts(MetaCoreEditorContext& editorContext) {
         return;
     }
 
+    if (ctrlDown && ImGui::IsKeyPressed(ImGuiKey_A, false)) {
+        MetaCoreSelectAllSceneObjects(editorContext);
+        return;
+    }
+
     if (ImGui::IsKeyPressed(ImGuiKey_Delete, false)) {
         (void)MetaCoreDeleteSelection(editorContext);
         return;
@@ -2588,6 +2603,10 @@ public:
                 MetaCoreHandleRedo(editorContext);
             }
             ImGui::Separator();
+            if (ImGui::MenuItem("全选", "Ctrl+A", false, !editorContext.GetScene().GetGameObjects().empty())) {
+                MetaCoreSelectAllSceneObjects(editorContext);
+            }
+            ImGui::Separator();
             if (ImGui::MenuItem("复制", "Ctrl+D", false, !editorContext.GetSelectedObjectIds().empty())) {
                 (void)MetaCoreDuplicateSelection(editorContext);
             }
diff --git a/tests/MetaCoreSmokeTests.cpp b/tests/MetaCoreSmokeTests.cpp
index 0520568..c07bd69 100644
--- a/tests/MetaCoreSmokeTests.cpp
+++ b/tests/MetaCoreSmokeTests.cpp
@@ -238,6 +238,11 @@ void MetaCoreTestSelectionStateMachine() {
     MetaCoreExpect(editorContext.IsObjectSelected(objectBId), "范围选择应包含中间对象 B");
     MetaCoreExpect(editorContext.IsObjectSelected(objectCId), "范围选择应包含终点 C");
     MetaCoreExpect(editorContext.GetActiveObjectId() == objectCId, "范围选择后 Active 应为终点 C");
+
+    const std::vector<MetaCore::MetaCoreId> allObjectIds = scene.BuildHierarchyPreorder();
+    editorContext.SetSelection(allObjectIds, allObjectIds.back());
+    MetaCoreExpect(editorContext.GetSelectedObjectIds().size() == allObjectIds.size(), "全选应包含场景中的所有对象");
+    MetaCoreExpect(editorContext.GetActiveObjectId() == allObjectIds.back(), "全选后 Active 应为最后一个对象");
 }
 
 void MetaCoreTestUndoRedo() {