Lips on fire ulcers can be treated with topical medications, oral medications, usually a light diet, timely treatment as prescribed by the doctor to avoid aggravation of symptoms. 1. Topical drugs: erythromycin ointment, acyclovir ointment and other medications can be used. Erythromycin ointment can have antibacterial effect to prevent lip infection; acyclovir ointment can be used for lip ulceration caused by stomatitis and other symptoms. 2. Oral medication: It is recommended to take oral antibacterial medication as prescribed by the doctor, such as cefixime, amoxicillin, etc. The above medication can effectively prevent secondary infections on the surface of the lips and avoid aggravation of the condition. 3. Daily care: to eat more light and easy to digest food, so as not to aggravate the mucosal damage. You can also eat more vitamin-rich foods, such as tomatoes, plums, oranges, etc., to promote rapid mucosal healing. Appearance of lips on fire ulceration, can promptly consult the doctor, follow the doctor’s instructions for reasonable treatment and medication.