A general processing module based on SOC chip is designed in this paper, which using two RAM embedded by SOC to realize the general processing module function of the different CPU. The module realizes the function of signal processing, information processing, link processing and voice processing and complete the design and test of ADC circuit, DAC circuit, clock circuit, power circuit, voice circuit and other functional circuit, which provides solid research foundation and hardware support for the miniaturization and generalization of the follow-up equipment.