Patients with mouth ulcers can use toothpaste with mild taste or choose toothpaste with the function of herbal medicine to clear heat and lower fire, but toothpaste can not play the role of treating mouth ulcers. To treat mouth ulcers, you need to spray watermelon cream spray, mouth ulcer intestinal paste, mouth ulcer scatter, open throat sword spray, or gargle with rehabilitation new liquid, etc. These drugs can treat mouth ulcers and shorten the duration of mouth ulcers. If the local pain of the mouth ulcer is very intense and has seriously affected eating and speaking. You can apply local ointment containing numbing ingredients for treatment, such as local lidocaine gel for pain relief, and also recombinant human epidermal growth factor gel on the ulcer surface to promote the healing of the ulcer surface. People suffering from mouth ulcers should also eat more fresh vegetables and fruits to replenish vitamin C or take vitamin C effervescent tablets to replenish vitamins, and pay attention to regular work and rest, do not stay up late or black and white for a long time.