The method of ranging tracking using wavelet transform in high-resolution radar system is researched in this paper.The back-scattered power of the target is represented as a function of time.The range of the each scattered point could be measured as a delay time of transmitter pulse.But for moving targets the amplitude and range would change speedily.So it is very difficult to tracking the range.In this paper the method of wavelet transform of input pulse for range tracking system is satisfactorily demonstrated.