A wart on the foot is medically called a plantar wart and is caused by human papillomavirus infection. It can be treated with topical medications such as topical interferon gel, onychomycin, pemphigus, and imiquimod cream. If the wart cannot be removed by topical medication, it can be treated by freezing or laser. If the number of wart is relatively small, freezing or laser treatment can be done. If the number of wart is relatively large, it means that the immunity of the individual is relatively low, so you can take oral or intramuscular injection of immunity-boosting drugs, such as transfer factor, Zhengqi Fuzheng, interleukin, thymopentin, BCG polysaccharide nucleic acid injection, etc. However, be careful not to pick the wart with your hands or find a pedicurist, as the wart is caused by a viral infection and can easily transmit the virus to other places.