Performances requirements of computer hosiery machine control system is analyzed, and the system scheme of double core processors cooperation control, which respectively accomplish human-computer interaction and control function, is designed. Aiming at the main electrical control points in computer hosiery machine, the system hardware circuit and control methods of various field devices were given. The results show that, the system control the objects through changing the frequency of electrical signal, and it has the characteristics of safe and power-saved.