Method: To analyse 80 patients with AS in staging and grading of X-ray imaging and take a statistic analysis together with the data of ESR,CRP,and HLA-B_27. Result: HLA-B_27 in 90% of cases were positive, ESR was elevated in 60% of the cases.

• 方法：对80例强直性脊柱炎患者进行X线摄片分级、分期，结合血沉（ESR）、C－反应蛋白（CRP）和HLA－B_27检查诊断。 并进行统计学分析。