According to the characteristics of M measurement and control equipment with voltage and current measurement, data transmission and processing capacity, a measurement and control equipment system is designed. Through the system composition, hardware design, high precision partial voltage, multi-channel acquisition, relay drive and array and chassis structure of electromagnetic shielding are studied and tested. The results show that the system is easy to install and maintain, can increase the overall heat dissipation of the chassis, improve the overall electromagnetic compatibility of the equipment, and all the performance and indicators meet the requirements.