Gastritis in children is a relatively common clinical disease of the gastrointestinal system. To treat gastritis in children, it is important to get rid of the cause and actively treat the original disease. If gastritis is mostly caused by a gastrointestinal cold or an upper respiratory infection, try to treat the symptoms of pharyngitis or upper respiratory infection. Try to rest in bed, eat liquid or semi-liquid food, dehydrated people can be given appropriate electrolyte solution, with serious bleeding should be treated as gastrointestinal bleeding. Drugs should be mainly applied to gastric mucosa-protective drugs, and H2 receptor antagonists, or proton pump inhibitors, such as omeprazole, can be given to those with severe bleeding. In addition, if it is due to accidental ingestion of toxic substances or corrosive agents, the stomach should be cleaned or detoxified with milk and egg white. Therefore, early diagnosis and early detection of gastritis in children and active treatment are necessary to achieve a complete cure.