A rational diet, less pickled food, less salt, less animal food intake and more vegetables and fruits can well reduce the occurrence of stomach cancer. 1.Onion Onion can reduce the content of nitrite in the stomach. Onion contains a kind of oak peel substance, which is a natural anti-cancer substance. Research shows that people who eat onion regularly have 25% less incidence of stomach cancer than those who eat little or no onion, and the death rate of stomach cancer is 30% lower. 2, yam Yam is a good and inexpensive tonic, not greasy, fragrant but not dry. It has been praised by medical doctors for generations as “the key medicine for deficiency management”. When yam is cooked, it has the effect of strengthening the spleen and benefiting the qi, nourishing the lung and moistening the dryness. It can be a good tonic food for the weakness of the spleen and stomach after a long illness, tiredness and weakness, loss of appetite; deficiency of lung qi and dryness, phlegm and cough, dry skin and other diseases. Yam can be eaten, cooked as a delicacy, grinded and steamed as a cake, more sweet food; can also be sliced and fried as rice; and can be rolled fine and cooked as porridge. 3.Mushrooms Mushrooms, which are called “anti-cancer nuclear weapons”, including mushrooms, shiitake mushrooms, enoki mushrooms and wood ear, are rich in anti-cancer substances, which can prevent and fight against cancer, not only control the development of cancer cells, but also make the formed cancer cells shrink. Tomato is also an antioxidant, especially its lycopene, which can neutralize free radicals in the body, and is useful in fighting stomach and digestive system cancers, as well as preventing breast and prostate cancers. 5.Garlic Garlic is a recognized anti-cancer food and has significant anti-cancer effects. Garlic is figuratively known as the “scavenger of the intestine”, which can lower blood lipids, improve immunity and anti-tumor. Some studies have pointed out that the annual intake of garlic has a significant negative correlation with the incidence of stomach cancer. People who consume a lot of raw garlic have a very low incidence of stomach cancer. The reason is that garlic can significantly reduce the nitrite content in the stomach and reduce the possibility of nitrosamine synthesis, thus having an anti-cancer effect. Allicin can not only kill gastric cancer cells cultured in vitro, but also inhibit gastric cancer transplanted in vivo, making it a more ideal food to intervene in the occurrence of gastric cancer. 6.Carrot Carrot is a good anti-cancer product that is actively promoted. For gastric cancer, it can regulate cell differentiation and prevent gastric mucosa deformation and necrosis, thus playing a role in preventing and treating gastric cancer. 7.Strawberry Among the anti-cancer fruits, the role of strawberry is in the first place. Fresh strawberry contains a wonderful tannic acid substance, which can produce anti-toxic effect in the body and stop the formation of cancer cells. 8.Grapes “eat grapes without spitting out the skin of grapes” is also very apt when applied to diet for cancer prevention. Grapes, especially grape skins, contain anthocyanins and resveratrol, which are natural antioxidants with anti-cancer effects and can inhibit the malignant transformation of cancer cells and destroy the replication ability of cancer cells.