Bathroom cabinets where the basin is directly connected to the cabinet are common to us, and the frequency of use is also quite high. The water outlet pipe of the basin will pass through the bottom plate and enter the ground, and the condensed water in the basin will also take the opportunity to sneak into the cabinet bottom plate from the cutting edge of the plate, causing the bathroom cabinet bottom plate to be damp and deformed. As long as a waterproof bottom drain is installed at the outlet of the pipe at the bottom of the pool, the service life of the cabinet can be prolonged.