Electrical appliance security cabinet for building

The invention discloses a building electric appliance security cabinet, which comprises a cabinet body assembly, the cabinet body assembly comprises a cabinet body, the top of the cabinet body is provided with a plurality of groups of exhaust fans and a heat dissipation part, the heat dissipation part comprises a supporting plate, the outer surface of the supporting plate is fixedly connected with the inner wall of the cabinet body, and the outer surface of the cabinet body is fixedly communicated with a getter pump unit. The lower portion of the air suction pump unit communicates with the interior of a space defined by the adjacent supporting plates through a communicating pipe. The electrical appliance security cabinet for the building can effectively solve the technical problems that in the prior art, due to the fact that a drawer type low-voltage switch cabinet is provided with multiple drawers and multiple partition plates in the cabinet correspondingly, airflow resistance of a bottom plate and a top pla