Folic acid does not reverse atrophic gastritis, but if a person with atrophic gastritis has anemia or folic acid deficiency, he or she needs to take appropriate folic acid supplements. Atrophic gastritis is a type of chronic gastritis, which is a condition in which the gastric mucosa suffers repetitive damage leading to a reduction and atrophy of the glands. Due to the atrophy of the intrinsic glands of the gastric mucosa, patients may experience impaired nutrient absorption, leading to folate deficiency. In addition, autoimmune atrophic gastritis can also present with vitamin malabsorption and anemia. If these conditions exist in the patient, folic acid supplementation can be beneficial in relieving symptoms. However, folic acid cannot reverse atrophic gastritis, and the treatment of this disease needs to rely on regular medication, such as ranitidine, omeprazole and other gastric acid inhibitors, colloidal bismuth, thioglycollate and other gastric mucosal protectants, and antibacterial treatment if the patient has Helicobacter pylori infection. Patients who suffer from atrophic gastritis should go to the hospital and be treated under the guidance of a doctor, and should not blindly take medication or folic acid supplementation on their own to avoid delaying their condition.