Objective:To explore the effect of cupping combined with acupoint application on acute urinary retention (AUR) and its influences on detrusor function after anorectal surgery.Methods:Randomized controlled trial. A total of 120 patients in the hospital were enrolled as the observation objects between April 2020 and April 2022. According to random number table method, they were divided into two groups, 60 in each group. The control group was given acupoint application, while observation group was additionally given cupping. All were continuously treated for 3 days. Before and after treatment, urination function symptoms were scored. The pain degree was assessed by VAS. C-reactive protein (CRP) was detected by ELISA, and white blood cell count (WBC) was detected by blood routine analyzer. The bladder volume (CC), maximum flow rate (Q max), average flow rate (AFR) and residual urine volume (PVR) were evaluated by urodynamics analyzer. The adverse reactions were recorded, and clinical curative effect was evaluated. Results:The difference in total response rate between observation group and control group was statistically significant [91.67% (55/60) vs. 80.00% (48/60); χ2=4.90, P=0.027]. After treatment, scores of dysuria, frequency of urination, urgency of urination and VAS in observation group were significantly lower than those in the control group ( t=22.83, 8.70, 8.70, 17.26, P<0.01). After treatment, Q max [(10.85±3.49) ml/s vs. (8.13±2.74) ml/s, t=4.75], AFR [(5.40±1.42) ml/s vs. (3.68±1.51) ml/s, t=19.44] and CC [(352.69±51.75) ml/s vs. (396.57±58.16) ml/s, t=4.37] in observation group were significantly higher than those in the control group ( P<0.01), while PVR [(36.73±6.54) ml/s vs. (51.04±10.32) ml/s, t=9.07] was significantly lower than that of the control group ( P<0.01). The levels of serum CRP and WBC in observation group were significantly lower than those in the control group ( t=23.50, 5.05, P<0.01). The difference in the incidence of adverse reactions between observation group and control group was not statistically significant [6.67% (4/60) vs. 5.00% (3/60); χ2=0.15, P=0.697]. Conclusion:Cupping combined with acupoint application can improve detrusor function, relieve abnormal urination symptoms and improve curative effect in AUR patients after anorectal surgery, which is safe and reliable.