Abstract: The denoising of torpedo fuze target signal is important for fuze reliable action.The conventional band pass filter has a low denoising precision and a poor waveform stability,whilst wavelet transform has a good feature in the denoising of a signal via decomposing a signal into different frequency bands with different scale parameters.Based on the typical models of torpedo electromagnetic fuze and magnetic fuze target signal,the wavelet denoising of the fuze target signal under a complex background noise is conducted by using wavelet transform,and a simulation of the denoising results with MATLAB is performed.The simulation graphs show that the wavelet denoising method has high precision,good adaptability and small waveform distortion compared with the conventional denoising means,so it is effective for eliminating background noises in torpedo fuze target signal.