Xanthous ulcer is also called impetigo, a few people with very mild condition may be able to heal themselves in half a month or so, but most patients need to use medication, usually medication can be relieved and healed in about 2 weeks. The exact recovery time will vary due to individual differences. Impetigo is an acute purulent inflammation of the skin caused by Staphylococcus aureus and Streptococcus b hemolyticus infections. Patients with milder forms of the disease can eliminate the bacterial infection through their own resistance, and may be able to heal on their own, but the recovery time is longer, usually around half a month. Most patients with impetigo cannot heal themselves and need to be actively treated with medication, such as topical glycerite lotion, neomycin solution, mupirocin ointment, etc., and also with oral penicillin V potassium tablets and cefuroxime and other antibacterial drugs. Drug treatment for about 2 weeks can basically improve, the serious may be relatively longer time. Patients with xanthous ulcer should go to the hospital in time, under the guidance of the doctor to carry out regular treatment, in order to cure the disease faster. Drugs should be used under the guidance of a doctor.