At present, the main method of cancer is to supplement nutrition through chemotherapy, which has a certain auxiliary effect on the treatment of cancer. First of all, we should diversify our food and eat more foods with high protein content, especially eel and loach. At the same time, we should eat more fruits and vegetables, potatoes, apples and carrots, and supplement enough vitamins, especially foods containing VC and carotene, which have antioxidant effect, can improve immunity and is good for preventing infection.