Chronic erythematous gastritis test carbon 13 is negative, can be under the guidance of the doctor oral inhibition of gastric acid secretion of drugs and drugs to protect the gastric mucosa to treat. 1. Drugs to inhibit gastric acid secretion: chronic erythematous gastritis is mainly found in gastroscopy gastric mucosa showing erythema-like manifestations, accompanied by inflammatory cell infiltration, the patient has nausea, vomiting, subglottic pain and other symptoms, it is recommended that the use of drugs to inhibit gastric acid such as proton pump inhibitors, such as omeprazole, etc., and H ₂ receptor antagonists such as ranitidine and so on, to carry on the treatment. 2. Drugs to protect gastric mucosa: In the clinic, you can choose magnesium aluminum carbonate chewable tablets, bismuth potassium citrate and so on to carry on the treatment, which can form a layer of protective film on the surface of gastric mucosa to avoid damage to the gastric mucosa. When chronic erythematous gastritis is found, consult the gastroenterology department of regular hospitals.