Abstract：Objective：To observe the clinical effect of infrared light irradiation combined with external application of salt for urinary retention after cerebral angiography. Methods：A total of 63 cases of patients with urinary retention after cerebral angiography were randomly divided into the control group and the treatment group， 32 and 31 cases in each group respectively. The control group was simply treated with routine induced urination，and the treatment group was treated with infrared light irradiation combined with external application of salt at umbilical part. The clinical effect，the onset time，the catheterization rate and the incidence of adverse events in the two groups were observed. Before and after treatment，the bladder residual urine volumes in the two groups were observed and compared. Results：The total effective rate was 90.32% in the treatment group and 84.38% in the control group， there being no significance in the difference(P＞0.05). Before treatment，there was no significant difference being found in the comparison of bladder residual urine volumes between the two groups(P＞0.05). After treatment，the bladder residual urine volumes in the two groups were decreased when compared with those before treatment(P＜0.05)，and the volume in the treatment group was fewer than that in the control group(P＜ 0.05). After treatment，the catheterization rate was 6.45% in the treatment group and 15.63% in the control group，there being no significance in the difference(P＞0.05). The onset time in the treatment group was shorter than that in the control group，the difference being significant(P＜0.05). During treatment，there was no adverse event related to treatment in the two groups. Conclusion：The application of infrared light irradiation combined with external application of salt at umbilical part for patients with urinary retention after cerebral angiography can rapidly relieve clinical symptoms and improve bladder residual urine volume with good safety.