Hysteroscopic adhesiolysis is now the standard treatment of choice for intrauterine adhesion. The risk of uterine perforation is high during surgery especially for severe adhesion with closed uterine cavity;it may be very difficult to identify the depth and scope during adhesionlysis. So it is necessary to perform the operation under guidance. The main methods of guidance are transabdominal ultrasound guidance and laparoscopic guidance. Ultrasound guidance is a nontraumatic

readily available technique

with axial guide principle and the help of endometrial line of the anechoic area above the adhesion. ‘Transillumination test’is used during laparscopic guidance. Ultrasound and laparoscopic guidance combine together when it is necessary. The efficiency and safety of hysteroscopic adhesionlysis may be improved with guidance.