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Traditional S-band-based unified carrier measurement control and communication system limited by the low working frequency and narrow bandwidth can not meet the increasing requirements of modern and future spacecraft measurement control and communication system for high-speed data transmission, communication bandwidth, installation space, overcoming blackout, anti-interference, etc. This paper put forward a Ka-band direct sequence spread spectrum system spacecraft control and communication system , which has the characteristics of narrow band, good space selecting and blackout overcoming, to solve the above problems by the point frequency and channel unity of telemetry, orbit measurement system and remote control, simplifying the system structure and reducing equipment size. The system architecture and the main equipment of the system are introduced, the detailed design of the data acquisition equipment, Ka-band integrated terminal equipment and the selection of the antenna feeder equipment are described, and the ground test system is presented. The system has the characteristics of small size, wide bandwidth and good expansibility, which can meet the requirements of the design and application of future spacecraft measurement control and communication system.