The treatment of recurrent mouth ulcers needs to be based on the causes of recurrent mouth ulcers and symptomatic treatment: First, recurrent mouth ulcers may be caused by the lack of certain trace elements in the patient, it is necessary to go to the hospital to check a trace element, such as vitamin B and zinc elements, etc. If the recurrent mouth ulcers are caused by the lack of such elements, it is necessary to properly supplement vitamin B drugs, as well as oral If the recurrent mouth ulcers are caused by the lack of these elements, you need to supplement the vitamin B drugs and take oral zinc gluconate solution, etc. After the balance of trace elements in the body, recurrent mouth ulcers can be cured. Secondly, if the recurrent mouth ulcers are caused by the patient’s decreased body resistance and long-term staying up late, it is necessary to supplement the drugs that enhance the body resistance, such as transfer factor, etc. It is recommended that the patient should maintain a regular routine, do not stay up late, do not eat spicy and stimulating food, etc. You can also apply local drugs that promote ulcer healing, such as tretinoin gel or watermelon cream spray, etc. to promote the local healing of ulcers. Local healing of ulcers.