diff --git a/test/unittest/core/pattern/overlay/sheet_presentation_test_ng.cpp b/test/unittest/core/pattern/overlay/sheet_presentation_test_ng.cpp
index fa6592398998387b9faebbcf6449e31677bbbc27..b429ec8ae94079531370fa2db71b897dbd62a139 100644
--- a/test/unittest/core/pattern/overlay/sheet_presentation_test_ng.cpp
+++ b/test/unittest/core/pattern/overlay/sheet_presentation_test_ng.cpp
@@ -2801,33 +2801,116 @@ HWTEST_F(SheetPresentationTestNg, UpdateTitleTextColor002, TestSize.Level1)
 }
 
 /**
- * @tc.name: UpdateSheetObject001
- * @tc.desc: Test UpdateSheetObject Function.
+ * @tc.name: ComputeWidthAndHeight001
+ * @tc.desc: ComputeWidthAndHeight sheetHeight, sheetWidth
  * @tc.type: FUNC
  */
-HWTEST_F(SheetPresentationTestNg, UpdateSheetObject001, TestSize.Level1)
+HWTEST_F(SheetShowInSubwindowTestNg, ComputeWidthAndHeight001, TestSize.Level1)
 {
-    /**
-     * @tc.steps: step1. create sheet node and pattern.
-     */
-    SheetPresentationTestNg::SetUpTestCase();
     auto callback = [](const std::string&) {};
-    auto sheetNode = FrameNode::CreateFrameNode(
-        "Sheet", 101, AceType::MakeRefPtr<SheetPresentationPattern>(201, "SheetPresentation", std::move(callback)));
+    auto sheetNode = FrameNode::CreateFrameNode(V2::SHEET_PAGE_TAG, ElementRegister::GetInstance()->MakeUniqueId(),
+        AceType::MakeRefPtr<SheetPresentationPattern>(0, "", std::move(callback)));
+    ASSERT_NE(sheetNode, nullptr);
+    auto* layoutWrapper = new LayoutWrapperNode(
+        sheetNode, sheetNode->GetGeometryNode(), sheetNode->GetLayoutProperty());
+    ASSERT_NE(layoutWrapper, nullptr);
+    auto sheetPageLayoutAlgorithm = AceType::MakeRefPtr<SheetPresentationLayoutAlgorithm>();
+    sheetPageLayoutAlgorithm->sheetStyle_.showInSubWindow = true;
+
+    auto host = layoutWrapper->GetHostNode();
+    CHECK_NULL_VOID(host);
+    auto sheetWrapper = AceType::DynamicCast<FrameNode>(host->GetParent());
+    CHECK_NULL_VOID(sheetWrapper);
+    auto sheetWrapperPattern = sheetWrapper->GetPattern<SheetWrapperPattern>();
+    CHECK_NULL_VOID(sheetWrapperPattern);
+    auto mainWindowRect = sheetWrapperPattern->GetMainWindowRect();
+    mainWindowRect.SetHeight(100.0f);
+    mainWindowRect.SetWidth(100.0f);
+    sheetPageLayoutAlgorithm->ComputeWidthAndHeight(layoutWrapper);
+    EXPECT_FLOAT_EQ(sheetPageLayoutAlgorithm->sheetHeight_, 100.0f);
+    EXPECT_FLOAT_EQ(sheetPageLayoutAlgorithm->sheetWidth_, 100.0f);
+}
+
+/**
+ * @tc.name: ComputeMaxHeight001
+ * @tc.desc: ComputeMaxHeight
+ * @tc.type: FUNC
+ */
+HWTEST_F(SheetShowInSubwindowTestNg, ComputeMaxHeight001, TestSize.Level1)
+{
+    float parentConstraintHeight = 100.0f;
+    float parentConstraintWidth = 100.0f;
+    auto callback = [](const std::string&) {};
+    auto sheetNode = FrameNode::CreateFrameNode(V2::SHEET_PAGE_TAG, ElementRegister::GetInstance()->MakeUniqueId(),
+        AceType::MakeRefPtr<SheetPresentationPattern>(0, "", std::move(callback)));
+    ASSERT_NE(sheetNode, nullptr);
     auto sheetPattern = sheetNode->GetPattern<SheetPresentationPattern>();
     ASSERT_NE(sheetPattern, nullptr);
-    /**
-     * @tc.steps: step2. set sheetType_ is SheetType::SHEET_BOTTOM, create sheetObject.
-     */
-    sheetPattern->sheetType_ = SheetType::SHEET_BOTTOM;
-    sheetPattern->InitSheetObject();
-    auto sheetObject = sheetPattern->GetSheetObject();
-    /**
-     * @tc.steps: step3. set newType is SheetType::SHEET_CENTER, UpdateSheetObject.
-     * @tc.expected: sheetType_ = SheetType::SHEET_CENTER.
-     */
-    sheetPattern->UpdateSheetObject(SheetType::SHEET_CENTER);
-    EXPECT_EQ(sheetObject->sheetType_, SheetType::SHEET_CENTER);
-    SheetPresentationTestNg::TearDownTestCase();
+    auto* layoutWrapper =
+        new LayoutWrapperNode(sheetNode, sheetNode->GetGeometryNode(), sheetNode->GetLayoutProperty());
+    ASSERT_NE(layoutWrapper, nullptr);
+    NG::RectF floatButtons;
+    floatButtons.SetHeight(10.0f);
+    auto pipeline = PipelineContext::GetCurrentContext();
+    ASSERT_NE(pipeline, nullptr);
+    auto avoidInfoMgr = pipeline->GetAvoidInfoManager();
+    ASSERT_NE(avoidInfoMgr, nullptr);
+    avoidInfoMgr->instanceId_ = 1001;
+    avoidInfoMgr->avoidInfo_.needAvoid = true;
+
+    auto sheetPageLayoutAlgorithm = AceType::MakeRefPtr<SheetPresentationLayoutAlgorithm>();
+    auto maxHeight =
+        sheetPageLayoutAlgorithm->ComputeMaxHeight(parentConstraintHeight, parentConstraintWidth, layoutWrapper);
+    EXPECT_FLOAT_EQ(maxHeight, 90.0f);
+}
+
+/**
+ * @tc.name: ComputePopupStyleOffset002
+ * @tc.desc: ComputeMaxHeight
+ * @tc.type: FUNC
+ */
+HWTEST_F(SheetShowInSubwindowTestNg, ComputePopupStyleOffset002, TestSize.Level1)
+{
+    float parentConstraintHeight = 100.0f;
+    float parentConstraintWidth = 100.0f;
+    auto callback = [](const std::string&) {};
+    auto sheetNode = FrameNode::CreateFrameNode(V2::SHEET_PAGE_TAG, ElementRegister::GetInstance()->MakeUniqueId(),
+        AceType::MakeRefPtr<SheetPresentationPattern>(0, "", std::move(callback)));
+    ASSERT_NE(sheetNode, nullptr);
+    auto sheetPattern = sheetNode->GetPattern<SheetPresentationPattern>();
+    ASSERT_NE(sheetPattern, nullptr);
+    auto* layoutWrapper =
+        new LayoutWrapperNode(sheetNode, sheetNode->GetGeometryNode(), sheetNode->GetLayoutProperty());
+    ASSERT_NE(layoutWrapper, nullptr);
+    auto sheetPageLayoutAlgorithm = AceType::MakeRefPtr<SheetPresentationLayoutAlgorithm>();
+    sheetPageLayoutAlgorithm->sheetStyle_.showInSubWindow = false;
+    auto maxHeight =
+        sheetPageLayoutAlgorithm->ComputeMaxHeight(parentConstraintHeight, parentConstraintWidth, layoutWrapper);
+    EXPECT_FLOAT_EQ(maxHeight, 90.0f);
+}
+
+/**
+ * @tc.name: ComputePopupStyleOffset003
+ * @tc.desc: ComputeMaxHeight
+ * @tc.type: FUNC
+ */
+HWTEST_F(SheetShowInSubwindowTestNg, ComputePopupStyleOffset003, TestSize.Level1)
+{
+    float parentConstraintHeight = 100.0f;
+    float parentConstraintWidth = 100.0f;
+    auto callback = [](const std::string&) {};
+    auto sheetNode = FrameNode::CreateFrameNode(V2::SHEET_PAGE_TAG, ElementRegister::GetInstance()->MakeUniqueId(),
+        AceType::MakeRefPtr<SheetPresentationPattern>(0, "", std::move(callback)));
+    ASSERT_NE(sheetNode, nullptr);
+    auto sheetPattern = sheetNode->GetPattern<SheetPresentationPattern>();
+    ASSERT_NE(sheetPattern, nullptr);
+    auto* layoutWrapper =
+        new LayoutWrapperNode(sheetNode, sheetNode->GetGeometryNode(), sheetNode->GetLayoutProperty());
+    ASSERT_NE(layoutWrapper, nullptr);
+    auto sheetPageLayoutAlgorithm = AceType::MakeRefPtr<SheetPresentationLayoutAlgorithm>();
+    sheetPageLayoutAlgorithm->sheetStyle_.showInSubWindow = false;
+    auto maxHeight =
+        sheetPageLayoutAlgorithm->ComputeMaxHeight(parentConstraintHeight, parentConstraintWidth, layoutWrapper);
+    EXPECT_FLOAT_EQ(maxHeight, 90.0f);
 }
 } // namespace OHOS::Ace::NG
\ No newline at end of file
diff --git a/test/unittest/core/pattern/overlay/sheet_showInSubwindow_test_ng.cpp b/test/unittest/core/pattern/overlay/sheet_showInSubwindow_test_ng.cpp
index 2eee3c3613ea30769c2296c0e3c6f6f2857a146d..6ecbdce1c29308f73ccddc20e236cbf081e8c27e 100644
--- a/test/unittest/core/pattern/overlay/sheet_showInSubwindow_test_ng.cpp
+++ b/test/unittest/core/pattern/overlay/sheet_showInSubwindow_test_ng.cpp
@@ -1714,4 +1714,118 @@ HWTEST_F(SheetShowInSubwindowTestNg, UpdateDragBarStatus001, TestSize.Level1)
     object->UpdateDragBarStatus();
     EXPECT_EQ(dragBarLayoutProperty->propVisibility_, VisibleType::INVISIBLE);
 }
+
+/**
+ * @tc.name: ComputeWidthAndHeight001
+ * @tc.desc: ComputeWidthAndHeight sheetHeight, sheetWidth
+ * @tc.type: FUNC
+ */
+HWTEST_F(SheetShowInSubwindowTestNg, ComputeWidthAndHeight001, TestSize.Level1)
+{
+    auto callback = [](const std::string&) {};
+    auto sheetNode = FrameNode::CreateFrameNode(V2::SHEET_PAGE_TAG, ElementRegister::GetInstance()->MakeUniqueId(),
+        AceType::MakeRefPtr<SheetPresentationPattern>(0, "", std::move(callback)));
+    ASSERT_NE(sheetNode, nullptr);
+    auto* layoutWrapper = new LayoutWrapperNode(
+        sheetNode, sheetNode->GetGeometryNode(), sheetNode->GetLayoutProperty());
+    ASSERT_NE(layoutWrapper, nullptr);
+    auto sheetPageLayoutAlgorithm = AceType::MakeRefPtr<SheetPresentationLayoutAlgorithm>();
+    sheetPageLayoutAlgorithm->sheetStyle_.showInSubWindow = true;
+
+    auto host = layoutWrapper->GetHostNode();
+    CHECK_NULL_VOID(host);
+    auto sheetWrapper = AceType::DynamicCast<FrameNode>(host->GetParent());
+    CHECK_NULL_VOID(sheetWrapper);
+    auto sheetWrapperPattern = sheetWrapper->GetPattern<SheetWrapperPattern>();
+    CHECK_NULL_VOID(sheetWrapperPattern);
+    auto mainWindowRect = sheetWrapperPattern->GetMainWindowRect();
+    mainWindowRect.SetHeight(100.0f);
+    mainWindowRect.SetWidth(100.0f);
+    sheetPageLayoutAlgorithm->ComputeWidthAndHeight(layoutWrapper);
+    EXPECT_FLOAT_EQ(sheetPageLayoutAlgorithm->sheetHeight_, 100.0f);
+    EXPECT_FLOAT_EQ(sheetPageLayoutAlgorithm->sheetWidth_, 100.0f);
+}
+
+/**
+ * @tc.name: ComputeMaxHeight001
+ * @tc.desc: ComputeMaxHeight
+ * @tc.type: FUNC
+ */
+HWTEST_F(SheetShowInSubwindowTestNg, ComputeMaxHeight001, TestSize.Level1)
+{
+    float parentConstraintHeight = 100.0f;
+    float parentConstraintWidth = 100.0f;
+    auto callback = [](const std::string&) {};
+    auto sheetNode = FrameNode::CreateFrameNode(V2::SHEET_PAGE_TAG, ElementRegister::GetInstance()->MakeUniqueId(),
+        AceType::MakeRefPtr<SheetPresentationPattern>(0, "", std::move(callback)));
+    ASSERT_NE(sheetNode, nullptr);
+    auto sheetPattern = sheetNode->GetPattern<SheetPresentationPattern>();
+    ASSERT_NE(sheetPattern, nullptr);
+    auto* layoutWrapper =
+        new LayoutWrapperNode(sheetNode, sheetNode->GetGeometryNode(), sheetNode->GetLayoutProperty());
+    ASSERT_NE(layoutWrapper, nullptr);
+    NG::RectF floatButtons;
+    floatButtons.SetHeight(10.0f);
+    auto pipeline = PipelineContext::GetCurrentContext();
+    ASSERT_NE(pipeline, nullptr);
+    auto avoidInfoMgr = pipeline->GetAvoidInfoManager();
+    ASSERT_NE(avoidInfoMgr, nullptr);
+    avoidInfoMgr->instanceId_ = 1001;
+    avoidInfoMgr->avoidInfo_.needAvoid = true;
+
+    auto sheetPageLayoutAlgorithm = AceType::MakeRefPtr<SheetPresentationLayoutAlgorithm>();
+    auto maxHeight =
+        sheetPageLayoutAlgorithm->ComputeMaxHeight(parentConstraintHeight, parentConstraintWidth, layoutWrapper);
+    EXPECT_FLOAT_EQ(maxHeight, 90.0f);
+}
+
+/**
+ * @tc.name: ComputePopupStyleOffset002
+ * @tc.desc: ComputeMaxHeight
+ * @tc.type: FUNC
+ */
+HWTEST_F(SheetShowInSubwindowTestNg, ComputePopupStyleOffset002, TestSize.Level1)
+{
+    float parentConstraintHeight = 100.0f;
+    float parentConstraintWidth = 100.0f;
+    auto callback = [](const std::string&) {};
+    auto sheetNode = FrameNode::CreateFrameNode(V2::SHEET_PAGE_TAG, ElementRegister::GetInstance()->MakeUniqueId(),
+        AceType::MakeRefPtr<SheetPresentationPattern>(0, "", std::move(callback)));
+    ASSERT_NE(sheetNode, nullptr);
+    auto sheetPattern = sheetNode->GetPattern<SheetPresentationPattern>();
+    ASSERT_NE(sheetPattern, nullptr);
+    auto* layoutWrapper =
+        new LayoutWrapperNode(sheetNode, sheetNode->GetGeometryNode(), sheetNode->GetLayoutProperty());
+    ASSERT_NE(layoutWrapper, nullptr);
+    auto sheetPageLayoutAlgorithm = AceType::MakeRefPtr<SheetPresentationLayoutAlgorithm>();
+    sheetPageLayoutAlgorithm->sheetStyle_.showInSubWindow = false;
+    auto maxHeight =
+        sheetPageLayoutAlgorithm->ComputeMaxHeight(parentConstraintHeight, parentConstraintWidth, layoutWrapper);
+    EXPECT_FLOAT_EQ(maxHeight, 90.0f);
+}
+
+/**
+ * @tc.name: ComputePopupStyleOffset003
+ * @tc.desc: ComputeMaxHeight
+ * @tc.type: FUNC
+ */
+HWTEST_F(SheetShowInSubwindowTestNg, ComputePopupStyleOffset003, TestSize.Level1)
+{
+    float parentConstraintHeight = 100.0f;
+    float parentConstraintWidth = 100.0f;
+    auto callback = [](const std::string&) {};
+    auto sheetNode = FrameNode::CreateFrameNode(V2::SHEET_PAGE_TAG, ElementRegister::GetInstance()->MakeUniqueId(),
+        AceType::MakeRefPtr<SheetPresentationPattern>(0, "", std::move(callback)));
+    ASSERT_NE(sheetNode, nullptr);
+    auto sheetPattern = sheetNode->GetPattern<SheetPresentationPattern>();
+    ASSERT_NE(sheetPattern, nullptr);
+    auto* layoutWrapper =
+        new LayoutWrapperNode(sheetNode, sheetNode->GetGeometryNode(), sheetNode->GetLayoutProperty());
+    ASSERT_NE(layoutWrapper, nullptr);
+    auto sheetPageLayoutAlgorithm = AceType::MakeRefPtr<SheetPresentationLayoutAlgorithm>();
+    sheetPageLayoutAlgorithm->sheetStyle_.showInSubWindow = false;
+    auto maxHeight =
+        sheetPageLayoutAlgorithm->ComputeMaxHeight(parentConstraintHeight, parentConstraintWidth, layoutWrapper);
+    EXPECT_FLOAT_EQ(maxHeight, 90.0f);
+}
 } // namespace OHOS::Ace::NG
\ No newline at end of file