Patients with oral ulcer are advised to eat more fresh vegetables and fruits, and some vitamins can be supplemented appropriately. Do not eat spicy, irritating and barbecue foods, and do not eat hard things with shells. Then be careful not to eat too hot food, so as not to stimulate ulcers and cause pain.

Patients with oral ulcers should drink plenty of water. Drinking plenty of water can play a certain role in washing the oral ulcer, washing the bacteria and food residues on the surface and around the ulcer, promoting the healing of the oral ulcer, stimulating the secretion of saliva, and lubricating the mucosa to a certain extent, so patients with oral ulcer can appropriately supplement some vitamins and trace elements, which is also helpful to the healing of the ulcer.