INTRODUCTION Billroth gastrectomy has some advantages ofinhibiting acid secretion,low ulcer recurrence andlow mortality. However, postoperativecomplications,such as dumping syndrome andreflux gastritis,often occurred as a result ofpylorectomy.To minimize these complications,pylorus-preserving gastrectomy(PPG)had beenperformed for gastric ulcer with satisfied clinicalresults.Positive correlation was not found betweenulcer recurrence and serum gastrin level.In this