Abstract: The design of a new digital DS/BPSK receiver is introduced and its key problems and fundmental principles involved are described in the paper.The dedicated large-scale intergrated circuit, combined with digital signal processing algorithm is adopted to implement demodulation of spread spectrum signal. It applies serial-parrallel combined PN code acquisiton, Costas phase-locked tracking loop and delay-lock tracking loop techniques. The receiver is characterized by excellent overall performance as well as flexible hardware and software interface.It can be efficiently used in multi-objects telemetry and control system based on code division multiple access.