The patients with helicobacter pylori accepted he quadruple eradication program of the helicobacter pylori.They will be followed-up from 1 year to 5 years to observe the situation of re-infection of helicobacter pylori.The rate of the re-infection will be described by frequency and percentage.
The patients who accept the quadruple eradication program of the helicobacter pylori and success to eradicate helicobacter pylori will be followed-up to observe the situation of re-infection of helicobacter pylori.