In order to avoid the problem that the radio fuse is disturbed by the sea clutter when intercepting the ultra-low altitude flight target, the realization of the range gate compression circuit is studied. This paper gives the realization of the high degree tracking and the range gate compression, based on analysis of the principle of the range gate compression. And this paper completes the simulation based on Matlab/Simulink. The simulation results show that the method can accurately achieve the high degree tracking and the range gate compression, and suppress sea clutter to the radio fuse.