1.Eating less or no salt-cured, smoked, fried and baked foods such as salted fish, ham, bacon and other salt-cured foods contain more salt, which can damage the integrity of gastric mucosa, while these foods can increase the content of carcinogenic substance 3-4 benzopyrene in the process of production and promote the occurrence of gastric cancer. 2, to develop good eating habits If the diet is not regular and quantitative, overeating, eating too fast and too hot, it is a damaging stimulus to the stomach, which has a certain relationship with the occurrence of gastric cancer. 3.Do not eat moldy food, and eat less or no pickles. Such food contains or can produce a lot of nitrite and secondary amines, which can synthesize nitrosamines under certain conditions after entering the body, and these compounds are strong carcinogenic substances. 4.No smoking and less drinking Smoking can induce lung cancer, which is a consensus among people. Likewise. Smoking is also related to stomach cancer. Smoke contains many carcinogenic or cancer-promoting substances, which is one of the causes of esophageal cancer and stomach cancer. Although alcohol itself is not a carcinogenic substance, strong wine will stimulate the gastric mucosa, damage the mucosal tissue and promote the absorption of carcinogenic substances, which is more harmful if drinking alcohol and smoking at the same time. Because alcohol can enhance the permeability of cell membranes, thus strengthening the absorption of carcinogenic substances in smoke. 5.Eat more fresh vegetables and fruits and drink more milk Fresh vegetables, fruits and milk are rich in vitamins, which can participate in repairing the natural barrier of the body and stop the synthesis of chemical carcinogens in the body. 6.Actively treat diseases related to the occurrence of gastric cancer, such as atrophic gastritis with intestinal epithelial hyperplasia, abnormal hyperplasia, untreated gastric ulcer, gastric polyps, etc.