Gastric cancer is one of the most prevalent malignant tumors worldwide and the third most common malignant tumor in China. The causes of gastric cancer are not fully understood, and atrophic gastritis is considered to be one of the important precancerous diseases of the stomach. Because of this, many patients have different degrees of fear and worry after being diagnosed with atrophic gastritis, so will all atrophic gastritis turn into gastric cancer? What should be done after the disease? With the widespread development of gastroscopy, more and more patients have been diagnosed with this disease, but those who will develop to gastric cancer are very few. The progression from gastritis to gastric cancer is a gradual process, which generally follows the rule of “normal gastric mucosa → superficial gastritis → atrophic gastritis → intestinal epithelial hyperplasia → heterogeneous hyperplasia → gastric cancer”, and each of these stages is divided into different levels, such as mild, moderate and severe. Even if a patient has gastric cancer, it can be cured as long as it can be detected early. Therefore, there is no need for patients to worry too much. Atrophic gastritis has no specific clinical symptoms, and there is no exact correlation between the severity of symptoms and the degree of lesions seen by gastroscopy and pathology, which means that doctors cannot determine whether a patient has atrophic gastritis or to what extent the disease has developed simply by clinical symptoms. Therefore those patients with chronic gastric disease, those with new onset gastric disease over the age of 40, those in areas with a high incidence of gastric cancer, and those with a family history of gastric cancer should undergo early gastroscopy to determine if they have atrophic gastritis. The treatment of atrophic gastritis lacks particularly ideal methods, and a combination of symptomatic treatment and regular gastroscopic follow-up is generally used to cope with the diagnosis of the disease. In other words, when symptoms occur, the patient needs to go to the hospital and the doctor will give the appropriate treatment according to the different types of symptoms; when there are no symptoms, no medication can be taken, and regular follow-up gastroscopy is sufficient. Generally speaking, gastroscopy for common atrophic gastritis should be performed once every 1 to 2 years. If there is a combination of intestinal epithelial hyperplasia and heterogeneous hyperplasia, you should pay attention to it, which is called gastric precancerous lesion and has a significantly higher chance of cancer than simple atrophic gastritis. This can be monitored and early treatment can be carried out to prevent the occurrence of stomach cancer. In addition, it is also important to maintain a positive and optimistic mood and develop healthy and good living habits. You should quit smoking and drinking, avoid drowning, barbecue, strong tea, strong coffee and spicy food, encourage eating more fresh fruits and vegetables, and ensure sufficient sleep and moderate exercise.