多处理机系统分为共享存储器型和消息传递型。本文提出了一种新的消息传递型多处理机系统的总线接口的设计方法。区别于以往的总线接口的方法，引入了口的概念。优点是使得接收方也有权决定信息包接收与否，算法更灵活，可用广播传送方式，还可以动态地进行进程转移。 Multi-processor system is divided into shared memory and messaging. This paper presents a new messaging multiprocessor system bus interface design. Different from the previous bus interface approach, the introduction of the concept of mouth. The advantage is that the receiver also has the right to decide whether the information packet is received or not, the algorithm is more flexible, the broadcast transmission method can be used, and the process can be dynamically transferred.