Dehumidifying, dewatering and anti-condensation device of box

The utility model provides a dehumidifying, dewatering and anti-condensation device for a box, which comprises a shell, an exhaust pipe, a labyrinth air guide block, a cover plate, a fastening bolt, a power supply, a control module, a fan and two temperature and humidity modules, the power supply, the control module, the fan and one temperature and humidity module are arranged in the shell, the exhaust pipe is directly connected with the shell or connected with the shell through an air pipe, and the labyrinth air guide block is arranged on the exhaust pipe. The exhaust pipe extends out of the box to form an end, the labyrinth air guide block is sleeved with the end, extending out of the outer wall of the box, of the exhaust pipe from the outer portion of the box, the cover plate covers the end of the labyrinth air guide block, the fastening bolt penetrates through the cover plate and the labyrinth air guide block and is screwed on the exhaust pipe, and the control module controls the control module according