Objective:To research the clinical effect of Yi-yuan moxibustion on the bladder dysfunction after incomplete spinal cord injury Method:Forty patients with urinary retention were randomized into treatment group and control group,20 cases in each group.The two groups were treated by rehabilitation training,and the treatment group received Yi-yuan moxibustion,once a day,5d a week,8 weeks in total.Bladder volume and residual urine were tested by B-scan ultrasonography.After 8 week treatment,the curative effect was assessed.Result:One week after all treatments,the results of B-scan ultrasonography showed that bladder volume and residual urine volume of both groups are were improved than before.The curative effect after 6 weeks treatment suggests that the effective rate in control group was 55％ and the treatment group was e 90％.The difference was statistically significant (P＜0.05).Conclusion:Yi-yuan moxibustion is a kind of good therapy to ameliorate urinary retention caused by spinal cord injury.