Erythematous gastritis, i.e., chronic non-atrophic gastritis, can be seen as congested gastric mucosa under gastroscopy, and is mainly manifested as middle-upper abdominal discomfort, dyspepsia, anemia and other symptoms. 1. Upper and middle abdominal discomfort. The manifestation of self-consciousness in the middle and upper abdomen often appear discomfort symptoms, such as hidden pain, burning sensation, feeling of fullness and so on. 2. Indigestion. Loss of appetite, acid reflux, belching, nausea and vomiting. 3. Anemia symptoms. In a small part of the population, there can be pale, general weakness, weight loss and other manifestations of anemia, which is related to the gastric mucosal erosion leading to a small amount of bleeding continuously for a long time. This disease appears in the gastroscope with the manifestations of punctate erythema, congestion, bleeding, etc. Usually, there are no obvious clinical symptoms, but the condition may gradually develop to atrophic gastritis, or even cause cancer. It is recommended that people with this disease should consult a doctor in time and be treated actively after a clear diagnosis is made.