Objective To analyze the therapeutic effect of lidocaine in cervical cancer postoperative urinary retention.Methods Sixty-five patients with cervical cancer postoperative urinary retention were divided into two groups by random digits table method:treatment group 32 cases,immediately after the urethral catheter to infiltrate 1 ml of 2％ lidocaine cotton ball placed urethral opening more than 20 minutes again urine; control group 33 cases,routine for patients with urethral catheter.The incidence of urinary retention and adverse drug reactions were compared between two groups.Results Treatment group residual urine volume was(53 ± 22) ml,1 case(3.12％,1/32) of urinary retention,control group was (163 ± 32) ml and 8 cases (24.24％,8/33),there was significant difference (P ＜ 0.05).Conclusion Lidocaine for cervical cancer postoperative urinary retention has good prevention effect,can be popularized in clinical application.