Diet for stomach cancer is very important. The stomach is the main digestive organ of people, and food usually reaches the stomach first, then digested and absorbed to provide nutrition to the body. Because of this direct relationship between stomach and diet, stomach cancer has higher dietary requirements compared with other cancers, and there are more dietary considerations for stomach cancer. Families of patients should pay attention to the diet of gastric cancer, as scientific diet of gastric cancer has far-reaching significance to the prognosis. Most stomach cancer patients have many bad eating habits, and changing bad eating habits is the first task of stomach cancer patients. (1) Avoid smoking and alcohol in the diet of stomach cancer. (2) Avoid spicy stimulation, such as onion, garlic, ginger, pepper, chili, cinnamon, etc. (3) Avoid moldy, polluted, hard, rough, multi-fiber, greasy, sticky and indigestible food in the diet of stomach cancer. (4) Avoid frying, deep-frying, smoking, pickling and raw food for stomach cancer. (5) Avoid overeating and hard food for stomach cancer. (1) The diet of stomach cancer is suitable for foods that enhance immunity and anti-stomach cancer, such as yam, lentil, barley, rhizome, enoki, mushroom, mushroom, sunflower seed, kiwi, fig, apple, sardine, honey, pigeon’s egg, milk, pig’s liver, sandworm, monkey head mushroom, abalone, needlefish, sea cucumber, oyster, squid, shark, tiger fish, yellowtail swim bladder, seahorse, snapper. (2) The diet of stomach cancer should include more highly nutritious foods to prevent and control cachexia, such as oyster chicken, pigeon, quail, beef, pork, rabbit, egg, duck, tempeh, tofu, silver carp, grass carp, swordfish, pond lice, mackerel, yellowtail, squid, crucian carp, eel, pangolin, pomfret, loach, shrimp, tamari, pork liver, sturgeon. (3) Nausea, vomiting and vomiting of stomach cancer, such as Ulva, grapefruit, orange, loquat, corn, walnut, rose, poppy, fig, ginger, lotus root, pear, winter vegetable, mango, umeboshi, lotus seed, etc. (4) The diet of stomach cancer with blood in stool should be light vegetables, turtle, shark, shark’s fin, marjoram, goldenseal, monkey head mushroom, honey, caper, banana, olive, ume, wood ear, lamb’s blood, broad bean coat, sesame, persimmon cake, tofu dregs, snail and other foods. (5) Diet of diarrhea stomach cancer is suitable for shark, lentil, pear, taro, chestnut, pomegranate, lotus seed, gravy, mackerel, white hibiscus and other foods. (6) The diet of stomach cancer with abdominal pain is suitable for foods such as kumquat, cabbage, flounder, horseshoe crab fish, toadfish, sandworm, sea cucumber, squid, taro flower, etc. (7) To prevent and control the side effects of chemotherapy, the diet of stomach cancer should include kiwi, asparagus, cinnamon, walnut, carp, shrimp, crab, goat blood, goose blood, jellyfish, grass carp, pond lice, shiitake mushroom, black fungus, quail, barley, mud snail, mung bean, golden needle, apple, loofah, walnut, turtle, snapper, umeboshi, apricot cake and fig. The diet of stomach cancer should be based on fresh fruits and vegetables, coarse grains, etc., and meat should be eaten less, so that the diet of stomach cancer can be reasonably matched and the body fluid can be prevented from being acidic. Many foods have inhibiting effects on cancer cells, such as calcium ions in food and garlic, onion and green tea containing hydrophobic base have clear protective effects, among which the protective effect of garlic is highly valued. Change the structure of diet: eat more vegetables and fruits. Increase bean diet and milk as appropriate. Reduce salt intake. Eat less or no smoked and cured foods to reduce the intake of the predecessor substances of nitrosamines. Food preservation with refrigerator refrigeration is preferred. Promote the consumption of garlic and green tea.