YH-F2 is a simulation computer of high-speed，high-accuracy and powerfull simulation ability. In simulation field，YH-F2's performance is higher than some supercomputer's. YH-F2 widely adoptes synchronous and parallel process technology，which is one of important reasons why YH-F2 of high speed and high efficiency. This paper introduces synchronous and parallel process technology adopted in YH-F2. The introduction is consists of several parts: architecture，synchronous and broadcast buses，interprocessor communications，processor internal，I/O systems，compiler etc.