To treat ulcers, firstly, drugs should be used, and secondly, daily life and bad habits should be controlled and overcome, which will greatly benefit the recovery of ulcers. The causes of oral ulcers include: (1) long-term mental stimulation, suffocation, chemotherapy, physical therapy, blood washing, staying up late, excessive fatigue, etc. ⑵ Smoking, drinking, drinking beverages, eating chili peppers and other highly irritating foods. ⑶ Being exposed to cold, heat and lack of water for a long time. ⑷Eat raw, cold, dry, hard, grilled and other foods. (5) Eat freshly harvested wheat, corn, sweet potatoes and other food crops. (6) Genetic factors are also an important factor in the occurrence of oral ulcers. Due to one or several of the above factors, autonomic nerve disorders are caused, microcirculation channels are blocked, and certain or several trace elements are deficient (VB2, VB6, B12, VC, etc.), resulting in ulcers in certain parts, especially the oral cavity. Ulcers are most likely to occur, followed by the anus and female vaginal area. Long-term countermeasures: Try to eliminate or limit the interference and damage to the body caused by the above factors, always create a benign microcirculation environment for your body, and fundamentally eliminate the conditions for ulcers to breed. This is currently the basic method for eradicating oral ulcers. Short-term emergency treatment measures: Apply Oral Ulcer Powder, Bingboran Powder, Liushen Pills, or Kuilingling Capsules on the ulcer surface. In addition, supplement trace elements, drink more porridge, drink more water, and eat more vegetables and fruits to facilitate repair of microorganisms. Circulation channel. Applying "Kouchuangling" is the best way to treat oral ulcers (this medicine is applying for a patent and is currently difficult to obtain). Generally, patients will be healed after just one application. Instructions for use: First wipe off the ulcer surface with a sterilized cotton swab, and then apply aphthous acid on it. It is not painful or itchy, and severe cases can be cured in just three times, with no side effects. Currently, there are no very effective methods in regular hospitals. Although there are many treatment methods for oral ulcers, they are basically symptomatic treatments. The main purpose is to relieve pain or reduce the number of recurrences, but they cannot completely control recurrences. Treatment requires at least a week. It can take up to a month or even longer. Therefore, it is important to prevent the recurrence of this disease.