diff --git a/ohos_nweb/src/cef_delegate/nweb_delegate_unittest.cc b/ohos_nweb/src/cef_delegate/nweb_delegate_unittest.cc
index 24753cace3e5945453286995d6af3a35dc8ac131..cd6f9c88996fcfda74fee8e7a150a203d277b7de 100644
--- a/ohos_nweb/src/cef_delegate/nweb_delegate_unittest.cc
+++ b/ohos_nweb/src/cef_delegate/nweb_delegate_unittest.cc
@@ -13,7 +13,9 @@
  * limitations under the License.
  */
 
+#define private public
 #include "nweb_delegate.h"
+#undef private
 #include "nweb.h"
 #include "nweb_delegate_adapter.h"
 #include "nweb_delegate_interface.h"
@@ -436,4 +438,16 @@ TEST_F(NWebDelegateTest, ExecuteCreatePDFExt) {
   nweb_delegate_->ExecuteCreatePDFExt(pdfConfig, callback);
 }
 
+#if defined(OHOS_DISPATCH_BEFORE_UNLOAD)
+TEST_F(NWebDelegateTest, NeedToFireBeforeUnloadOrUnloadEvents) {
+  auto result = nweb_delegate_->NeedToFireBeforeUnloadOrUnloadEvents();
+  EXPECT_FALSE(result);
+}
+#endif
+
+#if defined(OHOS_DISPATCH_BEFORE_UNLOAD)
+TEST_F(NWebDelegateTest, DispatchBeforeUnload) {
+  nweb_delegate_->DispatchBeforeUnload();
+}
+#endif
 }  // namespace OHOS::NWeb
diff --git a/ohos_nweb/src/cef_delegate/nweb_event_handler_unittest.cc b/ohos_nweb/src/cef_delegate/nweb_event_handler_unittest.cc
index 6cdd1ea088491e6223f0e54f4f9ae6061bd0b672..2c57ff2a56df7ed980b5fb33dad4280aa165f110 100644
--- a/ohos_nweb/src/cef_delegate/nweb_event_handler_unittest.cc
+++ b/ohos_nweb/src/cef_delegate/nweb_event_handler_unittest.cc
@@ -640,6 +640,8 @@ class MockCefBrowser : public CefBrowser {
     return 0;
   }
   void SetBackForwardCacheOptions(int32_t size, int32_t timeToLive) override {}
+  bool NeedToFireBeforeUnloadOrUnloadEvents() override { return false; }
+  void DispatchBeforeUnload() override {}
 #endif  // BUILDFLAG(IS_OHOS)
  private:
   CefRefPtr<CefBrowserHost> host_;
diff --git a/ohos_nweb/src/cef_delegate/nweb_handler_delegate_unittest.cc b/ohos_nweb/src/cef_delegate/nweb_handler_delegate_unittest.cc
index d2693247f8f89a3bbe4a111b0944d0232ee69511..9a177f2a66c64568e1024ca292b123dbe4db8fb7 100644
--- a/ohos_nweb/src/cef_delegate/nweb_handler_delegate_unittest.cc
+++ b/ohos_nweb/src/cef_delegate/nweb_handler_delegate_unittest.cc
@@ -214,6 +214,8 @@ class MockCefBrowser : public CefBrowser {
     return 0;
   }
   void SetBackForwardCacheOptions(int32_t size, int32_t timeToLive) override {}
+  bool NeedToFireBeforeUnloadOrUnloadEvents() override { return false; }
+  void DispatchBeforeUnload() override {}
 #endif  // BUILDFLAG(IS_OHOS)
 };
 
diff --git a/ohos_nweb/src/cef_delegate/nweb_preference_delegate_unittest.cc b/ohos_nweb/src/cef_delegate/nweb_preference_delegate_unittest.cc
index ddb8b72fea6244bc8a6530919ca13817da25c381..661eb51947224b098113d3a25b69e0a87d3f8034 100644
--- a/ohos_nweb/src/cef_delegate/nweb_preference_delegate_unittest.cc
+++ b/ohos_nweb/src/cef_delegate/nweb_preference_delegate_unittest.cc
@@ -56,6 +56,8 @@ class MockCefBrowser : public CefBrowser, public CefBrowserHost {
   bool IsSame(CefRefPtr<CefBrowser> that) override { return false; }
   bool IsPopup() override { return false; }
   bool HasDocument() override { return false; }
+  bool NeedToFireBeforeUnloadOrUnloadEvents() override { return false; }
+  void DispatchBeforeUnload() override {}
   CefRefPtr<CefFrame> GetMainFrame() override { return nullptr; }
   CefRefPtr<CefFrame> GetFocusedFrame() override { return nullptr; }
   CefRefPtr<CefFrame> GetFrame(int64 identifier) override { return nullptr; }
diff --git a/ohos_nweb/src/nweb_impl_unittest.cc b/ohos_nweb/src/nweb_impl_unittest.cc
index bfb79b3f519e83d17669b2220e8b59660076ee07..5c6e9407808b671b3569421f9dd7d352f63ace2d 100644
--- a/ohos_nweb/src/nweb_impl_unittest.cc
+++ b/ohos_nweb/src/nweb_impl_unittest.cc
@@ -781,6 +781,11 @@ class MockNWebDelegate : public NWebDelegateInterface {
   MOCK_METHOD(void, WebExtensionContextMenuIsIframe, (), (override));
   MOCK_METHOD(bool, WebExtensionContextMenuReloadFocusedFrame, (), (override));
 #endif
+
+#if defined(OHOS_DISPATCH_BEFORE_UNLOAD)
+  MOCK_METHOD(bool, NeedToFireBeforeUnloadOrUnloadEvents, (), (override));
+  MOCK_METHOD(void, DispatchBeforeUnload, (), (override));
+#endif  // OHOS_DISPATCH_BEFORE_UNLOAD
 };
 
 class MockNWebDragEvent : public NWebDragEvent {
@@ -1620,4 +1625,38 @@ TEST_F(NWebImplTest, NWebImplTest_ExecuteCreatePDFExt_001) {
   nweb_impl_->ExecuteCreatePDFExt(pdfConfig, callback);
 }
 
-}  // namespace OHOS::NWeb
\ No newline at end of file
+#if defined(OHOS_DISPATCH_BEFORE_UNLOAD)
+TEST_F(NWebImplTest, NeedToFireBeforeUnloadOrUnloadEvents_001) {
+  nweb_impl_->nweb_delegate_ = nullptr;
+  auto result = nweb_impl_->NeedToFireBeforeUnloadOrUnloadEvents();
+  EXPECT_FALSE(result);
+}
+#endif  // OHOS_DISPATCH_BEFORE_UNLOAD
+
+#if defined(OHOS_DISPATCH_BEFORE_UNLOAD)
+TEST_F(NWebImplTest, NeedToFireBeforeUnloadOrUnloadEvents_002) {
+  nweb_impl_->nweb_delegate_ = mock_delegate_;
+  EXPECT_CALL(*mock_delegate_, NeedToFireBeforeUnloadOrUnloadEvents())
+      .WillOnce(Return(true));
+  auto result = nweb_impl_->NeedToFireBeforeUnloadOrUnloadEvents();
+  EXPECT_TRUE(result);
+}
+#endif  // OHOS_DISPATCH_BEFORE_UNLOAD
+
+#if defined(OHOS_DISPATCH_BEFORE_UNLOAD)
+TEST_F(NWebImplTest, DispatchBeforeUnload_001) {
+  nweb_impl_->nweb_delegate_ = nullptr;
+  nweb_impl_->DispatchBeforeUnload();
+  EXPECT_FALSE(nweb_impl_->nweb_delegate_);
+}
+#endif  // OHOS_DISPATCH_BEFORE_UNLOAD
+
+#if defined(OHOS_DISPATCH_BEFORE_UNLOAD)
+TEST_F(NWebImplTest, DispatchBeforeUnload_002) {
+  nweb_impl_->nweb_delegate_ = mock_delegate_;
+  EXPECT_CALL(*mock_delegate_, DispatchBeforeUnload()).Times(1);
+  nweb_impl_->DispatchBeforeUnload();
+  EXPECT_TRUE(nweb_impl_->nweb_delegate_);
+}
+#endif  // OHOS_DISPATCH_BEFORE_UNLOAD
+}  // namespace OHOS::NWeb
diff --git a/ohos_nweb/src/nweb_input_handler_unittest.cc b/ohos_nweb/src/nweb_input_handler_unittest.cc
index 021d4bc02b14cd4f0fbe2c1e27029ae539afa495..1836196d700c514a35850a49f0cdfa265a714036 100644
--- a/ohos_nweb/src/nweb_input_handler_unittest.cc
+++ b/ohos_nweb/src/nweb_input_handler_unittest.cc
@@ -775,6 +775,10 @@ class MockNWebDelegate : public NWebDelegateInterface {
   MOCK_METHOD(void, WebExtensionContextMenuIsIframe, (), (override));
   MOCK_METHOD(bool, WebExtensionContextMenuReloadFocusedFrame, (), (override));
 #endif
+#if defined(OHOS_DISPATCH_BEFORE_UNLOAD)
+  MOCK_METHOD(bool, NeedToFireBeforeUnloadOrUnloadEvents, (), (override));
+  MOCK_METHOD(void, DispatchBeforeUnload, (), (override));
+#endif
 };
 
 class MockNWebTouchPointInfo : public NWebTouchPointInfo {
diff --git a/ohos_nweb/src/nweb_inputmethod_handler_unittest.cc b/ohos_nweb/src/nweb_inputmethod_handler_unittest.cc
index 4b4f1b9125d0a1fe5b506e09d5fc0844c9ec1f6f..d3c4b0e605f486d316794a28180c442f1867f2ec 100644
--- a/ohos_nweb/src/nweb_inputmethod_handler_unittest.cc
+++ b/ohos_nweb/src/nweb_inputmethod_handler_unittest.cc
@@ -51,6 +51,8 @@ class MockCefBrowser : public CefBrowser {
   bool IsSame(CefRefPtr<CefBrowser> that) override { return false; }
   bool IsPopup() override { return false; }
   bool HasDocument() override { return false; }
+  bool NeedToFireBeforeUnloadOrUnloadEvents() override { return false; }
+  void DispatchBeforeUnload() override {}
   CefRefPtr<CefFrame> GetMainFrame() override { return nullptr; }
   CefRefPtr<CefFrame> GetFocusedFrame() override { return nullptr; }
   CefRefPtr<CefFrame> GetFrame(int64 identifier) override { return nullptr; }