A waterproof machine cabinet is provided. The waterproof machine cabinet comprises a cabinet body and a door, wherein the first metal section is disposed around the door; the second metal section is protruded at the side of the cabinet body to which the first metal section corresponds; a waterproof device sustained with the first metal section is disposed on the second metal section and used to be joint with the cabinet body when the door and the cabinet body is closed. The dependability of the waterproof is enhanced because a connection surface and a contact surface exist between the waterproof device and the door, so as to ensure the normal operation of the element in the machine cabinet.
