The invention is a watermark insertion and authentication method of transposition audio frequency based on Zernike, it belongs to the safety field of multi-media information. The invention has two processes, one is watermark insertion, the other is watermark monitor, compressing MP3 by audio frequency low order Zernike trisquare and the solidity of routine signal handling such as low band filtering, to make the insertion watermark achieve the purpose that MP3 compression and the solidity of low band filtering. The watermark is inserted in low order Zernike trisquare to ensure the solidity of the signal treated by watermark, and the distortion of the reconstruction based on Zernike trisquare in the past can be avoid the according the linearity relation between the audio frequency Zernike trisquare and the audio frequency amplitude.The invention method treats routine signal (MP3 compression, re-quantification, re-sampling, Gauss noise, amplitude linearity stretch, low band filtering and so on) solidly, the function improves greatly to resist the low band filtering and MP3 compression than the watermark which is inserted in the time domain, as a new audio frequency watermark technology, the invention can be used to the protect the proprietary right of digital audio frequency.