diff --git a/frameworks/core/components_ng/pattern/overlay/sheet_view.cpp b/frameworks/core/components_ng/pattern/overlay/sheet_view.cpp
index f1a1cb4f7b6..ed3dc3a1855 100644
--- a/frameworks/core/components_ng/pattern/overlay/sheet_view.cpp
+++ b/frameworks/core/components_ng/pattern/overlay/sheet_view.cpp
@@ -310,6 +310,7 @@ RefPtr<FrameNode> SheetView::BuildMainTitle(RefPtr<FrameNode> sheetNode, NG::She
 
 RefPtr<FrameNode> SheetView::BuildSubTitle(RefPtr<FrameNode> sheetNode, NG::SheetStyle& sheetStyle)
 {
+    CHECK_NULL_RETURN(sheetNode, nullptr);
     auto pattern = sheetNode->GetPattern<SheetPresentationPattern>();
     CHECK_NULL_RETURN(pattern, nullptr);
     auto subtitleId = pattern->GetSubtitleId();
diff --git a/frameworks/core/components_v2/inspector/stepper_composed_element.cpp b/frameworks/core/components_v2/inspector/stepper_composed_element.cpp
index f7515dbda4c..647d24dd521 100644
--- a/frameworks/core/components_v2/inspector/stepper_composed_element.cpp
+++ b/frameworks/core/components_v2/inspector/stepper_composed_element.cpp
@@ -65,6 +65,7 @@ RefPtr<StepperComponent> StepperComposedElement::GetStepperComponent() const
 void StepperComposedElement::UpdateChildWithSlot(int32_t slot, const RefPtr<Component>& newComponent)
 {
     auto stepperComponent = GetStepperComponent();
+    CHECK_NULL_VOID(stepperComponent);
     stepperComponent->InsertChild(slot, newComponent);
     auto renderStepper = GetInspectorElement<RenderStepper>(StepperElement::TypeId());
     if (!renderStepper) {