Abstract:In this articles the bisic principle of BPSK direct-sequence spread-spectrum system receiver is studied.with modulation of BPSK.A design scheme of BPSK direct-sequence pread-spectrum system receiver is proposed. the simulation model based on Matlab /Simulink is built.Based on Simulink tools,the simulation result of BPSK direct-sequence spread-spectrum system receiver is implemented.Finally,the original signal of the receiver is got.