diff --git a/multimedia/audio_framework/common/native_audiostream_base.h b/multimedia/audio_framework/common/native_audiostream_base.h
index 2d2a6dc040d52358adc6be4c69dfc0c057b9613d..c0d2048a35743e31174a3ee30cd8f8f1f86458ce 100644
--- a/multimedia/audio_framework/common/native_audiostream_base.h
+++ b/multimedia/audio_framework/common/native_audiostream_base.h
@@ -839,6 +839,14 @@ typedef enum {
      * @since 12
      */
     AUDIO_STREAM_PRIVACY_TYPE_PRIVATE = 1,
+    /**
+     * Privacy type that stream can be safely captured and screen casting.
+     * For example,{@link OH_AudioStream_Usage#AUDIOSTREAM_USAGE_VOICE_COMMUNICATION} will not be
+     * captured or screen casted by third party applications under AUDIO_STREAM_PRIVACY_TYPE_PUBLIC policy.
+     * However, the internal capture is allowed under the AUDIO_STREAM_PRIVACY_TYPE_SHARED policy.
+     * @since 21
+     */
+    AUDIO_STREAM_PRIVACY_TYPE_SHARED = 2,
 } OH_AudioStream_PrivacyType;
 
 /**