There is no such thing as “how long can mild atrophic gastritis heal itself”, mild atrophic gastritis can’t heal itself. Atrophic gastritis is a kind of chronic inflammation of the gastric mucosa characterized by the reduction or atrophy of the intrinsic glands on the surface of the gastric mucosa, with clinical manifestations of epigastric discomfort, loss of appetite, acid reflux, belching, nausea and so on. This disease usually can not be self-cured, but after active treatment, part of the gastric mucosal atrophy can be reversed. Treatment is mainly based on medication, such as magnesium aluminum carbonate, Rebapatide to protect the gastric mucosa, Itopride, Mosapride to promote gastrointestinal peristalsis and so on. Patients diagnosed with mild atrophic gastritis should actively cooperate with doctors and maintain a healthy diet to help improve the prognosis.