The utility model relates to a switchgear technical field for the electric power system especially relates to an aerify cabinet and cabinet body thereof to solve use among the prior art free -standing gas tank to splice into aerifing that the cabinet body caused the cabinet processing cost is high, the big problem of the processing degree of difficulty. For solving this technical problem, the utility model discloses use the baffle to cut apart into mutually independent generating line gas tank and circuit breaker gas tank with the casing. Replace the concatenation face among the prior art with a baffle, firstly practiced thrift the material, reduced manufacturing cost, secondly, avoided two gas tanks to make respectively, assemble and both weld the problem that the manufacturing degree of difficulty that the in -process location arouses and installation time increase, thirdly, reduced welding seam quantity, furtherly has reduced the risk of the processing degree of difficulty and welding deformation reduction cabinet body gas tightness. To sum up the utility model discloses reduced the cabinet body and aerify the cabinet manufacturing cost, reduced the manufacturing degree of difficulty, improved market competitiveness of the product.