If weight loss occurs after esophageal cancer surgery, attention should be paid to increase nutrition, which can be supplemented intravenously or fed with nutritious and easy-to-digest food, such as fish, milk, eggs, etc., to improve immunity of the body. Postoperative esophageal cancer is prone to malnutrition, which leads to weight loss. Intravenous supplementation of protein, amino acids, vitamins, minerals and other nutrients can be given. Nutrition can also be supplemented by eating foods rich in high quality protein such as fish, milk, eggs, soybean products and other fresh vegetables and fruits such as cauliflower, oilseed rape, tomatoes, apples, oranges and so on. If you cannot eat, you can place a nasogastric tube to ensure nutrition. In addition, attention should be paid to small meals, avoid overeating, and do not eat too hard and rough food, such as nuts and baklava.