The invention discloses a placement cabinet supporting mechanism for cloud computing equipment. The cabinet comprises a cabinet body, wherein the cabinet body is hollow; the lower end of the cabinet body is fixedly connected with locking universal wheels through foot pads; a supporting plate is arranged in the cabinet body, a plurality of vertically-arranged through openings are transversely formed in the supporting plate, sliding blocks are fixedly connected to the side walls of the two sides of the supporting plate, sliding grooves matched with the sliding blocks are formed in the inner walls of the two sides of the cabinet body, and a vertically-arranged fixing rod and a vertically-arranged threaded rod are arranged in the two sliding grooves respectively. The method is simple to operate and convenient to use, wherein the supporting plate is adjustable according to the size of part of cloud computing equipment installed on the supporting plate. By adjusting the supporting plate, thereserved space in the cabinet body is kept uniform, and air circulation in the cabinet body is facilitated, so that heat dissipation in the cabinet body is facilitated, the safety of cloud computingequipment in the cabinet body is protected, the service life of the cloud computing equipment is prolonged, and meanwhile, the maintenance cost of the cloud computing equipment is reduced.