CAN总线是一种有效支持分布式控制和实时控制的串行通信网络 ,它具有可靠性高、纠错能力强、走线少等优点 ,已成为一种总线标准。介绍了CAN总线及其具体特性 ,论述了它在喷浆机器人中的应用。 CAN bus is a kind of serial communication network that effectively supports distributed control and real-time control. It has the advantages of high reliability, strong error correction ability and few cabling and has become a bus standard. The CAN bus and its specific characteristics are introduced, and its application in shotcrete robot is discussed.