Non-atrophic gastritis, also known as superficial gastritis, is a chronic gastritis, a chronic inflammation of the gastric mucosa caused by a variety of etiologies. The clinical manifestations lack specificity and the main diagnostic modalities rely on gastroscopy and pathologic biopsy to confirm the diagnosis. Most adults have inactive, mild chronic superficial gastritis of the gastric mucosa, which can be considered as a physiological mucosal immune response and does not require pharmacological treatment. Chronic non-atrophic gastritis has a good prognosis, but has a tendency to become cancerous. In the progression of chronic inflammation to gastric cancer, chemosis, atrophy and heterogeneous hyperplasia are considered as precancerous states of the stomach. Usually intestinal epithelial chemosis is difficult to be reversed; atrophy can be improved or reversed in some patients; atypical hyperplasia, although also reversible, is prone to transform into cancer in severe cases. What patients need to pay attention to is that they should eat a regular diet, diversify food, avoid partial diet, pay attention to supplement a variety of nutrients, do not eat moldy food; eat less smoked, pickled, nitrate and nitrite rich food, eat more fresh food; avoid too rough, strong, spicy food and a lot of long-term drinking, quit smoking; maintain a good state of mind and adequate sleep to avoid aggravation of non-atrophic gastritis. Therefore, non-atrophic gastritis may become cancerous, so patients with non-atrophic gastritis, especially those with precancerous lesions of chemosis, atrophy and heterogeneous hyperplasia, should review gastroscopy regularly to understand the dynamics of the lesions in a timely manner.