Abstract: From the perspective of the organizers of medical electrical EMC laboratory, this paper elaborates the guiding principles, design ideas and experience of building medical EMC Laboratory. According to the needs of the laboratory, the basic requirements of anechoic chamber, the auxiliary room of anechoic chamber and other supporting rooms in the EMC laboratory are introduced. The key technologies of anechoic chamber, such as frequency range, shielding requirement and static zone, are mainly elaborated, so as to build a laboratory matching with test requirement.