Whether gastric atrophy is mild or not needs to be judged with the aid of gastroscopy or related examinations, and patients who are not capable of judging it by themselves can consult their doctors. The structure of the gastric wall of the stomach is generally composed of four layers of structure, from the inner to the outer for the mucous layer, submucous layer, muscular layer and tunica albuginea, in which the lamina propria has a large number of closely arranged gastric glands, with a small amount of connective tissue in between. Gastric atrophy means that the lesions in the gastric mucosa have extended to the deeper part of the glands, resulting in the destruction of the structure of the glands and the reduction of their number, and there may be fibrosis in the lamina propria. Generally, mild gastric atrophy refers to the atrophy of 1/3 of the lamina propria glands in the stomach, and if more than 2/3 of the lamina propria glands are atrophied, then it is severe, and moderate is between mild and severe. The patient’s subjective feeling is unable to recognize and analyze the atrophy of the stomach, and can only be judged by the physician with the help of a gastroscope or related examinations. When gastric atrophy occurs, it is important to pay attention to it and actively cooperate with the doctor for treatment to avoid delaying the condition.