People with mouth ulcers can spray watermelon cream spray, open-throat sword spray, or mouth ulcer spirit and other drugs locally on the ulcer for local anti-inflammatory treatment. If the ulcer causes severe pain, you can apply a local gel containing numbing medicine, such as applying lidocaine gel for pain relief, or you can use a gargle with numbing medicine ingredients, such as gargling with procaine gargle, to relieve pain. Recombinant human epidermal growth factor gel can also be applied to the ulcer wound to promote ulcer healing. You can also gargle with Rehabin solution, which is also useful for anti-inflammatory and healing of mouth ulcers. Patients with mouth ulcers should avoid spicy and irritating foods in their diet, and eat light, warm and soft foods. At the same time to eat more fresh vegetables and fruits, supplement vitamin C, to ensure the balance of nutrients in the body, you can also use oral vitamin C tablets, vitamin C effervescent tablets, or multivitamin tablets to supplement the method, also conducive to the healing of ulcers. For patients with low or disturbed immune function, mouth ulcers will appear repeatedly in the mouth, you can take drugs to improve immunity, such as pitocin.