Aiming at the problems in current radar signal sorting, this paper firstly analyzes the basic principle of the algorithm of the PRI transform and wavelet transform, combining the advantages and disadvantages of the two algorithms and put forward a synthetic method of radar signal sorting based on the combination of PRI transform and wavelet transform. This method firstly used PRI transform to sort the radar signal coarsely, and then wavelet transform was used to do it particularly. The simulation results show that this method is accurate and feasible under the condition that the signal to noise ratio is not less than 10 dB.