Abstract: Based on the theory of wavelet transform coefficient maxima, wavelet thresholding algorithmic to lower noise is analyzed. Because the signal to noise ratio by the seeker taken over influences the precision of measure angle of MUSIC super resolution algorithmic, wavelet thresholding algorithmic to lower noise appling to the precision analysis of MUSIC super resolution algorithmic is proposed. The Simulation results show the signal to noise ratio and the precision of measure angle are improved.