Gastritis does not necessarily turn into stomach cancer. Whether gastritis will turn into gastric cancer depends on the patient’s condition, most of the patients’ gastritis will not suddenly turn into gastric cancer, but some patients with long-standing chronic atrophic gastritis may have the possibility of cancer. Atrophic gastritis is the manifestation of certain heterogeneity of gastric mucous membrane cells in some cases, so this kind of patients may progress to gastric cancer; most of the patients with atrophic gastritis have Helicobacter pylori infection, and they need to go to the hospital in time to check whether there is this kind of bacterial infection or not, if there is this kind of bacterial infection, it may lead to the increased incidence rate of gastric cancer. If the patient has gastritis, he/she must cooperate with the doctor for active treatment to avoid the development of atrophic gastritis and gastric cancer. Meanwhile, regular rechecks should be conducted for early detection and early treatment.