In this paper, a low loss and high suppression surface acoustic wave filter is developed by the methods of pitch-modulated IDT and two acoustic channel designs. The filter uses 64°Y-X LiNbO3 as the substrate material, its center frequency is about 475 MHz, the insertion loss is less than 2 dB, the stop band rejection is better than 60 dB and the relative bandwidth of 1 dB is about 5%. The developed filter has the characteristics of low insertion loss and high stop band rejection. The results show that the design method has good practicability.