Adequate amount of vitamin C, vitamin A, trace elements such as selenium and molybdenum can offset, neutralize and reduce the carcinogenic effect of carcinogenic substances and achieve the effect of cancer prevention and anti-cancer. Pay attention to adjusting dietary habits in daily life, it can largely play a preventive role in cancer, eat the right one and cancer will stay away from you. 1.Foods rich in vitamin C: various fresh vegetables and fruits, such as mustard, skunk cabbage, cilantro, green garlic, capers, cauliflower, persimmon pepper, citrus, fresh dates, hawthorn, various radishes, cabbage, strawberries, mung bean sprouts, string beans, tomatoes, asparagus, lettuce, bananas, apples, apricots, kiwi, etc.; 2.Foods rich in vitamin A: chicken liver, beef liver, duck liver, pig liver, scallops, eggs, carrots , sweet potatoes, pea shoots, rape moss, persimmon peppers, celery, lettuce leaves, etc. 3.Foods rich in allicin: Some data show that foods containing allicin have obvious anti-cancer effects, mainly garlic and green onion. 4.Foods rich in trace elements: these foods can prevent and fight against cancer. Rich in meat, seafood, cereals, garlic, green onion and sesame. 5.Foods to improve immunity: there are kiwi, fig, apple, sardine, honey, milk, pig liver, monkey head mushroom, sea cucumber, oyster, squid, shark, seahorse, snapper, yam, turtle and shiitake mushroom, etc.