OBJECTIVE:To observe the curative effect on duodenal ulcer by pantoprazole treatment.METHODS:200 cases with duodenal ulcer were divided into two groups.The observation group(n=100) was treated by pantoprazole treatment.The control group(n=100) was treated by omeprazole treatment.Observed the efficacy,side effect and inflammatory response.RESULTS:The total effective rate (96.84%) was higher in the observation group than in the control group (85.26%).The inflammatory respone (20.00%) were lower in the observation group than in the control group (45.98%) after treatment.The side effect were lower in the two group.CONCLUSION:The curative effect is satisfied by pantoprazole treatment in duodenal ulcer.