Objective To investigate the efficacy of efficacy of warm needling plus Yunnan Baiyao aerosol in treating ankylosing spondylitis. Method Ninety patients with ankylosing spondylitis were randomly allocated to three groups, 30 cases each. The treatment group received warm needling plus Yunnan Baiyao aerosol in addition to medication;control group 1, warm needling plus Yunnan Baiyao tincture in addition to medication; control group 2, routine medication for rheumatism. Result There was no statistically significant difference between the treatment group and control group 1 (P>0.05) and there was between the treatment group and control group 2 (P＜0.05), indicating that the therapeutic effect was better in the treatment group than in the control group. Conclusion Warm needling plus Yunnan Baiyao aerosol can effectively relieve the pain, improve joint function and activity, prevent joint stiffness and deformity and reduce the disability rate in ankylosing spondylitis patients.