Non-atrophic gastritis, also known as chronic superficial gastritis, is a chronic inflammation of the gastric mucosa caused by a variety of etiologies. With erosion is a chronic inflammation of the gastric mucosa accompanied by a superficial necrotic defect, but its depth does not exceed the mucosal muscle layer. The clinical manifestations lack specificity and may include discomfort, fullness, vague pain, burning pain in the upper and middle abdomen, with no rhythmicity of pain. When bloating occurs it is often due to retained food in the stomach, delayed emptying, and indigestion. Indigestion symptoms such as loss of appetite, belching, acid reflux, and nausea are also often present. Some patients may have no clinical symptoms. The main causes include: 1, physical damage: alcohol, strong tea, coffee and eating hard and rough food or too cold and too hot food can lead to repeated physical damage to the gastric mucosa. 2, chemical damage: the use of non-steroidal anti-inflammatory drugs can inhibit the synthesis of prostaglandins, resulting in damage to the mucosal barrier and weakening of protective factors leading to mucosal damage. Nicotine in cigarettes can trigger insufficient blood circulation in the gastric mucosa. In addition, various causes of bile reflux can also lead to mucosal damage. 3, H. pylori infection: H. pylori is a Gram-negative microaerobic bacillus, and its infection is one of the main causes of chronic superficial gastritis. Long-term H. pylori can lead to a chronic inflammatory response in the gastric mucosa, which in turn leads to the occurrence of gastritis. 4, mental factors: such as long-term tension, apprehension or depression, can cause sympathetic and parasympathetic nerve imbalance. This causes a decrease in blood flow to the gastric mucosa, destroying the role of the gastric mucosal barrier and forming chronic inflammation of the gastric mucosa. Clinical examination: The diagnosis is mainly based on gastroscopy and histological pathology. In chronic non-atrophic gastritis with erosion, the mucosa is red and yellow, rough and uneven, or the folds are swollen and thickened, and erythema (dots, flakes, strips), bleeding spots and blotches are visible. In conclusion, non-atrophic gastritis with erosion is more common in clinical practice. If the above symptoms appear, you should seek medical attention in a timely manner to clarify the diagnosis, identify the cause, and treat the cause to avoid delaying the condition.