Flat warts are a type of viral infection. If broken, the contagiousness increases. The key is to enhance skin cleanliness and provide symptomatic treatment such as immune regulation and antiviral therapy. Oral medications like thymopeptide enteric capsules can be taken. For damaged areas, topical application of compound Phellodendron liquid or Kangfuxin liquid can be used for astringent cleaning. After the surface liquid has dried, interferon gel or butenafine cream can be applied. The treatment of flat warts varies from person to person and can occur in different parts of the body, generally in exposed areas such as the face, hands, and back, and is more common in females, but can also affect children. Dietary supplements such as porridge made from coix seeds can be included.