The 2000 national consensus opinion on chronic gastritis made four recommendations appropriate for H. pylori eradication: 1. chronic gastritis with significant abnormalities (mucosa with erosion, moderate to severe atrophy and intestinal metaplasia, and heterogeneous hyperplasia). 2. family history of gastric cancer. 3.With erosive duodenitis. 4.Persons with poor efficacy of conventional treatment for indigestion symptoms. The fourth article above is for functional dyspepsia with chronic gastritis. Although the detection rate of H. pylori in patients with functional dyspepsia is about 65% to 75%, the presence of this bacterium is not clearly associated with the appearance of functional dyspepsia symptoms. The role of H. pylori in the development of functional dyspepsia needs to be further investigated. Therefore, eradication of H. pylori in functional dyspepsia is only an experimental treatment and does not play a major role in the overall treatment plan.