Mouth blisters according to different causes, different drugs, for example: 1, herpes simplex, due to herpes simplex type I virus infection caused by oral pancyclovir tablets or acyclovir tablets, vasiclovir hydrochloride granules, while oral vitamin B1, vitamin B12 to nutritional nerves; but also need to be taken orally to immune regulation drugs, such as pidomod oral solution or splenic aminopeptide lyophilized powder, transfer factor oral solution, to Improve the immunity of the body, strengthen the level and ability of anti-virus; 2, papular urticaria, blisters on the top of the windy pimples, accompanied by itching, in the oral drugs need to apply anti-allergic levocetirizine hydrochloride granules, epinastine hydrochloride capsules, as well as compound glycyrrhizin tablets, and so on.