It is possible for flat warts to disappear on their own, but whether they can go away on their own is related to the body’s immunity and the severity of the disease. Flat warts are a viral skin disease caused by human papillomavirus infection, and the course of the disease has an important relationship with the body’s immunity. When the body’s immunity is strong and the condition is mild, the patient may rely on the body’s immune system to clear the virus, and the flat warts can disappear on their own; while the condition is serious or the body’s immune system is weak, the skin lesions can not disappear on their own, and it is recommended that the active treatment. The current treatment of flat warts is mainly physical therapy, including laser, freezing, etc., but also can use medication, such as 5-fluorouracil ointment, retinoic acid ointment and so on. Patients with flat warts are advised to go to the hospital in time for early treatment, and at the same time, they should maintain a healthy lifestyle and improve immunity in order to promote the recovery of the disease.