The utility model discloses a dampproof switch board, including the cabinet body and cabinet door, the bottom of the cabinet body is provided with the base, sets up on the base along two rectangle through -holes of cabinet body length limit direction range, is provided with the bottom plate on the base, and the bottom plate comprises shell, waterproof layer, filling layer, plastic film layer and inner shell from bottom to top in proper order, and the bottom plate upside still is equipped with the drier cabinet, cabinet door inboard is equipped with the elasticity boss with cabinet body adaptation, if the inside of the cabinet body is provided with the dry cloth wire casing. The utility model discloses has the wiring function, and design through the body of the cabinet to the switch board to and the cooperation of cabinet door and the cabinet body, effective control humid air's invasion, fundamentally solves humid tropical's in the switch board environment, guarantees components and parts and normally works in the switch board, and the setting of rectangle through -hole for insert the rectangle through -hole through the fork truck foot when cabinet body removes, can remove to the workshop relevant position.