According to Chinese medicine, in addition to the depletion of fluid in summer, high temperature also depletes qi, and tumor patients are more deficient after surgery, radiotherapy and other treatments. If they are deficient, they should make up for it. But should we make up for it in summer and how to make up for it properly? Summer dietary principles: one should be cool, can choose a variety of melons, seasonal vegetables and fruits, such as bitter melon, loofah, cucumber, melon, watermelon, melon, tomatoes, eggplant, celery, lettuce, asparagus, cabbage, etc.; two should be light, the diet of dishes should be mainly vegetarian, cooking to steam, stew, stir-fry, cold, less meat and fishy; three should be clean and supplemented with vegetable protein-rich soybean products, low fat content of meat, poultry, such as rabbit. Meat, poultry, such as rabbit, pigeon, chicken, quail, duck, lean pork, salted eggs, mushrooms, shiitake mushrooms, bean sprouts, fresh root, fungus, etc. Three high and one low diet: high vitamin, high protein, high fiber and low fat. 1. Adequate calories and proteins to maintain the nitrogen balance of the body. Milk, eggs, fish, poultry, soy products. 2.Fresh vegetables and fruits, mainly vegetables containing a lot of fiber, carotene, vitamin C and E. Rich in vitamin C: rape, spinach, cabbage, tomatoes, hawthorn, fresh dates, kiwi, etc. Rich in vitamin A: carrots, lettuce leaves, rape, etc. Also: shiitake mushroom, garlic, cabbage, celery, onion, shiitake mushroom, mushroom, black fungus, silver fungus, sea cucumber, seaweed, nori, potato, etc. Appropriate deployment of some coarse grains, such as whole wheat flour, more grains and cereals, corn flour, yellow rice, beans (soybeans, lentils, peas, etc.), less refined rice, refined noodles.