The invention aims to provide a water purifier waterproof structure, and is used for solving the technical problems that accumulated water of a conventional water purifier easily goes into the water purifier through a hanging hole and potential safety hazards exist. A water purifier is provided with a hanging hole, the waterproof structure includes a water blocking assembly which is arranged in the hang hole and/or the periphery of the hanging hole for blocking a liquid from going into the water purifier through the hanging hole. Through the water blocking assembly, the liquid can be effectively blocked from going into the water purifier through the hanging hole, and the safety and reliability of the water purifier are greatly improved. The invention also provides the water purifier adopting the waterproof structure.