Gastritis can eat oranges, but need to eat a small amount. Oranges contain a variety of vitamins and dietary fiber is good for the prevention of gastritis. Gastritis will take gastric mucosal protective agents such as aluminum thioglycollate, colloidal bismuth, eat with the drug 2-3 hours apart. It is best to heat or consume in a room with higher temperature. gastritis is caused by Helicobacter pylori infection, commonly used drugs are omeprazole, amoxicillin, clarithromycin, bismuth citrate potassium, long-term use of omeprazole can cause the risk of fracture in elderly patients, should be supplemented with calcium and vitamin D. Continuous use for more than three months can lead to hypomagnesemia, should be promptly supplemented with electrolytes to maintain the balance of electrolytes in the body. Amoxicillin and Clavulanin are antibacterial drugs, which can eradicate Helicobacter pylori, and cannot be taken at the same time with microecological agents, which will cause microecological agents to be inactivated and lose their effect.