When ulcers flare up frequently, local and systemic treatment can be administered. The surface of the ulcer can be sprayed with drugs such as gold-throat health, watermelon cream, rehabilitation new liquid, tin-like dispersion or with chlorhexidine to promote anti-inflammation and healing, and drugs such as lidocaine cream can be applied on the surface of the ulcer when the pain is unbearable. For ulcers that do not heal for a long time and have significant pain, silver nitrate cautery 10% can be used to promote new tissue production, local injection of tretinoin solution can speed up healing, and physical therapy using microwave and laser can reduce ulcer exudation. Since frequent ulcer attacks are associated with low immunity, systemic application of corticosteroids, transfer factor, levamisole, thymidine and other drugs can also be used.