Abstract:Objective: To evaluate the efficacy and safety of three kinds of nonsteroidal antiinflammatory drugs(NSAIDs) in sufferers of active ankylosing spondylitis(AS).Methods: 60 cases of active AS sufferers,who have been dosed from active time to rest time,were divided into three groups in random,23 cases in A group(nimesulide),21cases in B group(meloxicam) and 16 cases in C group(celecoxib).The changes of total ache evaluate(visual analogue scale, VAS),grades of night ache and spine ache were observed,and the total acesodyne efficacy and safety were evaluated.Results: The total ache VAS,grades of night ache and spine ache were improved significantly after treatment(P<0.01).The total effective ratio of easing ache was 73.9%,76.2% and 87.5% respectively,with no significant differences(P>0.05).The rate of side effects was 13.0%,23.8% and 6.3% respectively,with no significant differences(P>0.05).The side effects mainly focused on stomach and intestines,with no severe side effects.Conclusion: Nimesulide,meloxicam and celecoxib were similar to active AS patients in the efficacy and safety,and all possessed superior effects,high security and good tolerance.