Oral lichen planus is a chronic inflammatory disease of the oral mucosa, which is difficult to be completely cured, but can be relieved in a scientific way. Such as through the glucocorticoid intra lesion injection. 1. Glucocorticosteroids: most patients with oral lichen planus have problems due to immune dysfunction or bacterial germ infections. It can be treated with topical glucocorticosteroids, such as fludrocortisone, hydrocortisone, etc., under the guidance of a doctor. Glucocorticosteroids are immunosuppressive, anti-toxic and anti-inflammatory, and are the main drugs used in the treatment of oral lichen planus. 2. injection program: for patients with more serious symptoms, through the glucocorticoid oral drug treatment effect is not ideal, should be taken under the guidance of the doctor dexamethasone suspension intra lesion injection. This type of method can lead to a significant reduction in symptoms, but it is difficult to inject a sufficient amount of the drug into the gingival area of the lesion. If injections are performed for a long period of time, they may also increase side effects and induce histogastritis or strep throat. Patients who are clearly suffering from oral lichen planus need to go to the local hospital in time to find out the problem as early as possible and treat it as soon as possible so as not to delay the condition.