A wart, clinically known as a wart, is primarily caused by human papilloma virus infection. It is easily infected when the face is exposed to the virus when there is skin breakdown, decreased barrier function or immune deficiency. It is mainly manifested as a superfluous skin surface and is contagious. The wart is usually transmitted through direct contact, and trauma is the main factor causing the infection. When the mucous membrane of the skin is broken, the human papilloma virus invades the epithelial cells through the break, and the virus replicates and multiplies inside the cells, causing abnormal differentiation and proliferation of the epithelial cells, and superfluous organisms appear on the skin. The skin surface is keratinized, rough and hard, sometimes with a spine-like tip, with no inflammation at the base or around the wart. The wart needs to be treated promptly, mainly with local treatment, and can be treated with liquid nitrogen freezing, carbon dioxide laser treatment and photodynamic therapy at a regular hospital. In addition, pay attention to hygiene and cleanliness, avoid repeated scratching and stimulation, strengthen nutrition, eat more fruits and vegetables to enhance physical fitness.