Aiming at the shortcomings of the classical wavelet image denoising method using soft and hard threshold,an adaptive wavelet threshold and a wavelet threshold function called EEAC are proposed,a denoising method based on VTWD is designed.Ashrinkage factor is designed in the adaptive wavelet threshold,which makes the threshold decrease with the increase of decomposition level.It reflects the characteristic that the noise coefficient decreases continuously during decomposition,the noise coefficient and signal coefficient contained in the high frequency coefficient can be accurately distinguished.An adjusting parameter m is introduced into the EEAC wavelet threshold function to adjust the trend of the threshold function,so as to adjust the steady-state error and continuity of the threshold function and ensure that the reconstructed wavelet coefficients are closer to the original wavelet coefficients.The simulation results show that when 56