Some stomach diseases can also be infectious. There are many reasons for stomach diseases, among which the most common reason is Helicobacter pylori infection. Helicobacter pylori has a certain degree of infectivity. If you share tableware and toothbrushes with others, you may have Helicobacter pylori infection, which may lead to chronic gastritis, gastric ulcer and other stomach diseases. Therefore, to prevent the occurrence of stomach disease, we should first pay attention to the prevention of Helicobacter pylori infection, try to divide meals when eating, and avoid sharing tableware and dental utensils with others. In addition, if the patient has stomach disease, he or she should go to the hospital to check the gastroscope and C-14 breath test in time to make a clear diagnosis, and actively treat the disease according to the cause under the guidance of the doctor, so as to promote the recovery of the disease.