Patients can eat through the mouth after surgery to go through the process of liquid food, semi-liquid food and general diet. The following nutrients can promote wound healing: 1, supply high protein, high sugar diet: while supplementing protein must supply enough carbohydrates to participate in protein endogenous metabolism, which can reduce wound edema and prevent infection; 2, supply collagen-rich pig skin or pig feet food: these two can provide exogenous protein for patients to synthesize collagen fibers and proteoglycans, and also obtain 3, copper-rich foods: lean meat, liver, aquatic products, shrimp, beans, cabbage, mushrooms, chickweed, wheat, coarse grains, almonds, walnuts; 4, zinc-rich foods: oysters, shrimp, nori, pig liver, sesame, soybeans, lean pork, green beans, scallops, carp; 5, iron-rich foods: animal liver, heart, kidney, whole blood, egg yolk, shrimp, lean meat Secondly, green leafy vegetables, fruits (red fruits, grapes), dried fruits (persimmon cake, red dates), kelp, fungus, red beans, sesame paste, brown sugar and other plant foods, rich in iron, can also be used, but the absorption rate is not as good as animal foods; 6, calcium-rich foods: fish pine, shrimp skin, shrimp, sesame paste, dried beans, soy products, dairy products, etc., vegetables such as cedar, fennel, mustard stems, rape , cabbage, etc. (For vegetables with high oxalic acid content, such as spinach, amaranth, etc., blanch them in boiling water to dissolve oxalic acid in water, which can reduce the effect of oxalic acid on calcium absorption.) ; 7, foods rich in vitamin A: plant foods such as spinach, dried apricots, leeks, rape, fennel, lettuce leaves, mustard, amaranth, shiraz, carrots, sweet potatoes; animal foods such as animal liver, river crabs, eggs, butter, whole milk, duck eggs, quail eggs; 8, foods rich in vitamin A: fresh vegetables (tomatoes, cabbage, chard, etc.), fresh fruits (mandarin, orange, red fruits Fresh dates, strawberries, etc.), and kiwi, prickly pear, sea buckthorn and other wild fruits.