The electromagnetic compatibility study has carried out on the six phase interface circuit board what be designed, from PCB electromagnetic compatibility design angle, systematically elaborated the PCB EMC design principles. 对所设计的六相接口电路板进行了电磁兼容性研究,从PCB电磁兼容性设计角度,系统地阐述了PCB电磁兼容设计原则。