Audio Video coding Standard (AVS) is China’s secondgeneration source coding/decoding standard with fully Intellectual Properties. As the sixth part of AVS standard, AVSDRM aims to offer the universal and open interoperable standard for various requirements of digital rights management (DRM) in digital media industry. In its first version, AVS DRM committee document (CD) did not take into account the encryption modes on AVS audio. However, audio content protection also plays an important role in many digital media applications. Therefore, this paper proposes a perception-based scalable encryption approach for AVS audio, which specifies different audio encryption modes by utilizing the perception classification of the audio bitstream and provides multiple security levels by encrypting different audio coding layers. Moreover, the paper incorporates the proposed scalable encryption method in AVS audio finegranularity scalable codec technique and then implements an AVS audio trusted code...