Chronic gastritis with erosion is divided into two types: chronic superficial gastritis with erosion is usually not cancerous, and chronic atrophic gastritis with erosion is usually not cancerous when treated aggressively, but can become cancerous in 1-2 years if left untreated. Most of the chronic gastritis with erosion refers to diffuse ulcers or warty bulges on top of chronic superficial gastritis, which are classified into two types: persistent and vanishing. The disappearing type can disappear after giving treatment to suppress gastric acid and protect gastric mucosa, while the persistent type of lesions can improve significantly after giving treatment to suppress gastric acid, and if given active treatment such as gastroscopic electrocoagulation and resection, the lesions can also disappear in some patients, but there is a possibility of recurrence and rarely cancer. In case of chronic atrophic gastritis with erosion, most of them already have precancerous lesions, such as intestinal epithelial hyperplasia, etc. Most patients will not become cancerous after active surgical treatment, such as gastroscopic mucosal epithelial debridement and major gastrectomy. Patients with chronic gastritis with erosion are recommended to maintain good living habits, such as not eating moldy food, abstaining from smoking and alcohol, avoiding spicy and cold food, and undergoing regular gastroscopy to actively cooperate with treatment.