There are some factors which influence reflux esophagitis, in our country atrophic gastritis is important for the degree of it especially. Helicobacter pylori(H.P.) infection is popular in aged patients, so atrophic gastritis is also popular in such patients, then the frequency of reflux esophagitis is low comparing with other countries. But because of the late of H.P. infection comes to be higher and the eradication therapy for the peptic ulcer diseases has been done in these days, the late of atrophic gastritis comes to be lower and reflux esophagitis comes to be higher. In aged patients medication and physical factors influence reflux esophagitis and these factors are different in each patient. So it is very important to treat the patient of reflux esophagitis considering of each factor.