The main cause of chronic gastritis is Helicobacter pylori infection, which secretes a variety of toxins to destroy the gastric mucosa, causing chronic inflammation and a series of symptoms. If the symptoms persist for a long time and are serious, eradication of Helicobacter pylori is the first choice. I suggest you adopt the internationally recommended scheme: omeprazole 20 mg twice a day; Clarithromycin 0.25g twice a day; Tinidazole 0.5g, every night 1 time, the first dose is doubled. Three drugs (also known as triple therapy) should be taken for 7 ~ 15 days. Please pay attention to choose a reliable brand to ensure the curative effect. According to our recent experience, after the above treatment, most patients' symptoms improved significantly or even disappeared completely. Of course, the success rate of this scheme is not 100%, but 80% ~ 90%. If you still have symptoms after radical treatment, you can choose one or two drugs, such as tretinoin, Villepin, Modilin and Prebos, for a longer time. Diet should be regular and quantitative, and eat less irritating food; Quit smoking and drinking, and don't take drugs indiscriminately; If you have chronic inflammation of oral cavity and nasal cavity, you should receive gastroscopy treatment and reexamination regularly.