目的探讨介入性超声在难度较大宫腔操作中的应用。方法７４例计划生育手术中较困难的宫腔操作于超声监测下进行，并记录手术时间、出血量、宫腔线等。结果手术时间明显缩短，无手术并发症及人流综合反应等发生。结论较困难的宫腔操作在超声引导下进行，提高了手术的准确性和安全性，避免了手术并发症的发生，具有临床应用价值。 Objective To investigate the application of interventional ultrasound in intrauterine operation. Methods 74 cases of difficult operation of uterine cavity in family planning operation under ultrasonic monitoring, and recorded the operation time, blood loss, uterine cavity line. Results The operation time was significantly shortened, no complications and flow of human reaction occurred. Conclusions The more difficult uterine cavity operation is under the guidance of ultrasound, which improves the accuracy and safety of operation, avoids the occurrence of operative complications and has clinical value.