diff --git a/api/@ohos.bundle.bundleManager.d.ts b/api/@ohos.bundle.bundleManager.d.ts
index 51d2a6b6bae4915eb985ceb02d0910b12fa8a19c..5147531c4390bbe92ff8487c82b4d04c105c1342 100644
--- a/api/@ohos.bundle.bundleManager.d.ts
+++ b/api/@ohos.bundle.bundleManager.d.ts
@@ -987,6 +987,15 @@ declare namespace bundleManager {
      */
     WEB_NATIVE_MESSAGING = 32,
 
+    /**
+     * Indicates extension info with type of the faultLog
+     *
+     * @syscap SystemCapability.BundleManager.BundleFramework.Core
+     * @since 21 dynamic
+     * @since 22 static
+    */
+    FAULT_LOG = 33,
+
     /**
      * Indicates extension info with type of unspecified
      *
diff --git a/api/@ohos.hiviewdfx.FaultLogExtensionAbility.d.ts b/api/@ohos.hiviewdfx.FaultLogExtensionAbility.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..bc667d65c98073d60dc027d141f9b7df185ba427
--- /dev/null
+++ b/api/@ohos.hiviewdfx.FaultLogExtensionAbility.d.ts
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License"),
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file
+ * @kit PerformanceAnalysisKit
+ */
+
+import type FaultLogExtensionContext from './@ohos.hiviewdfx.FaultLogExtensionContext';
+
+/**
+ * Class of the FaultLog extension ability.
+ *
+ * @syscap SystemCapability.HiviewDFX.Hiview.FaultLogger
+ * @stagemodelonly
+ * @since 21 dynamic
+ */
+declare class FaultLogExtensionAbility {
+  /**
+   * Indicates FaultLog extension ability context.
+   *
+   * @type { FaultLogExtensionContext }
+   * @syscap SystemCapability.HiviewDFX.Hiview.FaultLogger
+   * @stagemodelonly
+   * @since 21 dynamic
+   */
+  context: FaultLogExtensionContext;
+
+  /**
+   * Called back when a FaultLog extension is ready to report fault.
+   *
+   * @syscap SystemCapability.HiviewDFX.Hiview.FaultLogger
+   * @stagemodelonly
+   * @since 21 dynamic
+   */
+  onFaultReportReady(): void;
+
+  /**
+   * Called back when a FaultLog extension is connected.
+   *
+   * @syscap SystemCapability.HiviewDFX.Hiview.FaultLogger
+   * @stagemodelonly
+   * @since 21 dynamic
+   */
+  onConnect(): void;
+
+  /**
+   * Called back when a FaultLog extension is disconnected.
+   *
+   * @syscap SystemCapability.HiviewDFX.Hiview.FaultLogger
+   * @stagemodelonly
+   * @since 21 dynamic
+   */
+  onDisconnect(): void;
+}
+
+/**
+ * Class of the FaultLog extension ability.
+ *
+ * @syscap SystemCapability.HiviewDFX.Hiview.FaultLogger
+ * @stagemodelonly
+ * @since 21 dynamic
+ */
+export default FaultLogExtensionAbility;
diff --git a/api/@ohos.hiviewdfx.FaultLogExtensionContext.d.ts b/api/@ohos.hiviewdfx.FaultLogExtensionContext.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..5d8e774f1764640c9ae544f8440de6f2e1ff4eaf
--- /dev/null
+++ b/api/@ohos.hiviewdfx.FaultLogExtensionContext.d.ts
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License"),
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file
+ * @kit PerformanceAnalysisKit
+ */
+
+import ExtensionContext from './application/ExtensionContext';
+/**
+ * The context of FaultLog extension.
+ *
+ * @extends ExtensionContext
+ * @syscap SystemCapability.HiviewDFX.Hiview.FaultLogger
+ * @stagemodelonly
+ * @since 21 dynamic
+ */
+export default class FaultLogExtensionContext extends ExtensionContext {
+}
diff --git a/kits/@kit.PerformanceAnalysisKit.d.ts b/kits/@kit.PerformanceAnalysisKit.d.ts
index f4c18bf7ddf5bdda6d54715f64b75069adf5d552..101df3b88ef552c27aea45f2ba752a3b875ee067 100644
--- a/kits/@kit.PerformanceAnalysisKit.d.ts
+++ b/kits/@kit.PerformanceAnalysisKit.d.ts
@@ -27,10 +27,12 @@ import hiSysEvent from '@ohos.hiSysEvent';
 import hiTraceChain from '@ohos.hiTraceChain';
 import hiTraceMeter from '@ohos.hiTraceMeter';
 import logLibrary from '@ohos.logLibrary';
+import FaultLogExtensionAbility from '@ohos.hiviewdfx.FaultLogExtensionAbility';
+import FaultLogExtensionContext from '@ohos.hiviewdfx.FaultLogExtensionContext';
 
 export {
   hiAppEvent, hiSysEvent, hiTraceChain, hiTraceMeter, hichecker, hidebug, hilog,
-  logLibrary
+  logLibrary, FaultLogExtensionAbility, FaultLogExtensionContext
 };
 /*** endif */