Warts belong to the human papilloma virus infection caused by the common skin disease, the body immunity is reduced, or immunodeficiency, and skin trauma or broken, may make the human papilloma virus take advantage of the opportunity to invade the human body, resulting in epidermal cell hyperplasia after the formation of warts, warts have a certain degree of cancer may be. The actual warts are usually a few of the common warts, acromegaly, flat warts, and so on, which are benign, contagious, and also cancerous. If warts are not removed early through dermatologic freezing and laser treatment, or surgical excision, most warts are not susceptible to cancer, but in the absence of treatment for a long period of time, it will further increase the risk of cancer, possibly causing oropharyngeal or cervical cancer. Early treatment of common warts usually results in good clearance of the warts. If left untreated for a long period of time, the warts continue to grow in size and become large common warts, oozing and malodor occurs, and squamous epithelial hyperplasia or atypical hyperplasia is induced, then they are susceptible to cancerous changes. If the warts become cancerous, it is usually a more serious case and requires immediate surgical excision. In addition to active treatment, patients can also be prevented from cancerous lesions by HPV vaccination, and usually pay attention to improving the body’s immunity to avoid recurrence.