Dehumidification device in switch cabinet

The utility model belongs to the technical field of electric power equipment, and particularly relates to a switch cabinet internal dehumidification device which comprises a cabinet body and a dehumidification assembly, when the switch cabinet internal dehumidification device is used, the equipment is assembled, an air suction pump is started to suck out humid air in the cabinet body through a dehumidification pipe, and the dehumidification pipe is provided with multiple bends, so that the flowing time of the humid air in the dehumidification pipe can be prolonged; the dehumidification effect on the air is improved, then the dehumidified air is conveyed into the air storage box, then the draught fan is started to be matched with the air pipe to convey the dry air in the air storage box into the air exchange box, and finally the air is conveyed into the cabinet body through the air drying channel. The heating wires arranged in the middle of the air drying channel in a transversely and longitudinally staggered