Plantar warts are common warts that occur on the soles of the feet, especially on the front part of the plantar area, and are caused by HPV (human papillomavirus) infections. They have no specific symptoms, but can be painful when they are pressed. Plantar warts are mainly caused by HPV-1 and HPV-4, i.e. human papillomavirus type I and type IV infections, and there are also a few cases of other types. The pathogenesis of warts is that the virus invades the skin of the soles of the feet, and gradually reproduces, inducing the abnormal growth of the skin cells, and ultimately the formation of a swelling. In addition, prolonged friction and foot trauma can increase the risk of plantar warts. Plantar warts start out as smooth papules and then grow into hard, yellowish-brown or grayish-brown plaques with black dots that protrude from the surface of the skin, and a “soft core” that can be seen when the keratin is removed. Plantar warts do not usually cause discomfort, but can be painful only when pressed or when the foot is stressed. If the plantar warts affect the patient’s daily life, it is recommended to consult a doctor in time. The main treatment methods include laser, freezing and other physical therapy, as well as fluorouracil ointment and other medication, and if necessary, laser surgical excision, the specific treatment methods should be in accordance with the doctor’s instructions, not blindly use their own medication.