Flat warts are generally not contagious if you don’t pick at them, and patients should go to the hospital and be treated under the guidance of a doctor. Flat warts belong to the HPV virus infection, is a kind of flat rash that occurs on the surface of the skin, flat warts mainly through direct or indirect contact transmission, HPV through the skin mucous membrane tiny break into the epithelial cells. Flat warts are generally not contagious if they come into contact with the surface of the warts when they are not broken. Flat warts patients can generally use fluorouracil ointment, imiquimod ointment and other drugs under the guidance of the doctor for treatment, imiquimod ointment is generally used for the treatment of dermatological disorders, imiquimod or excipient allergy is prohibited, and at the same time, the patient should do a good job of their own hygiene and cleanliness, and daily wear loose and breathable clothing. It is recommended that patients consult a doctor in a timely manner, under the guidance of the doctor to actively cooperate with the treatment, do not self-medication.