Treatment of gastritis: 1, symptomatic treatment, acid reflux and erosion and bleeding, can be given acid suppressants and mucosal protective agents, commonly used are omeprazole, lansoprazole, rabeprazole, compound bismuth aluminate granules, aluminum phosphate gel, etc.; abdominal distension, nausea and vomiting can be given gastric motility drugs, such as domperidone, mosapride; stomach spasm pain can be used antispasmodic agents, commonly used are 654-2; pernicious anemia, should be given vitamin 2, anti-HP infection treatment, can use amoxicillin, clarithromycin, tinidazole, tetracycline, furazolidone and other antibiotics, combined with bismuth and proton pump inhibitors, the course of treatment for 10-14 days. 3, atrophic gastritis with high-level neoplastic changes, can be considered for endoscopic mucosal resection and endoscopic mucosal debridement, or receive surgical treatment.