Some patients with residual gastritis may be asymptomatic, while some may have symptoms such as burning sensation in the pit of the heart; treatment mainly includes general treatment, medication, and surgery. Residual gastritis is caused by inflammation of the mucous membrane of the stomach after gastrectomy for benign lesions in the stomach and duodenum or diagnosis of malignant tumors such as gastric cancer. Some patients with gastritis may be asymptomatic, while some may have a burning sensation in the pit of the heart, especially after eating, as well as nausea, vomiting and other symptoms. Treatment mainly includes general treatment, drug treatment and surgery. General treatment is to avoid eating too hot, too hard, too acidic food and taking salicylate, povidone and other medicines in daily life; drug treatment includes the use of moxapride and other gastric stimulants as prescribed by the doctor; and surgical treatment is suitable for those who are ineffective in drug treatment and have more severe symptoms. Patients with symptoms of residual gastritis are advised to go to the hospital and actively cooperate with the doctor for treatment.