After an elderly person has a tooth extraction, the chewing function is limited. First of all, they need to eat soft food, preferably liquid or semi-liquid food, such as thin rice, noodles, steamed buns, rice, tofu, etc. This kind of food can be eaten. Secondly, after tooth extraction, the digestive function of the elderly changes, so they need to eat foods that are good for digestion and nutritious to ensure the intake of nutrients, such as meat, eggs, milk, chicken soup, fish soup, etc. These foods can be eaten more often. Finally, after the extraction of teeth, the elderly should try to eat warm and cool food, not too hot food, so as to better protect the mouth and respiratory tract.