Objectives: Literature describing complications after colposuspension and analyses of the learning curve is scarce. Knowledge concerning this topic may lower the frequency of complications, improve the effectiveness of the procedure and increase patients’ satisfaction. Design: The purpose of the study was to evaluate types and frequency of complications which occur during modified Burch colposuspension and shortly after the procedure (to the moment of admission home), aiming at the optimization of the operative technique. Materials and methods: Indications for colposuspension were: genuine stress incontinence II and III degree and paravaginal defect medium to large degree (type II stress incontinence according to Blaivais). We have analyzed first 400 procedures, performed by 3 gynecologists. A complex analysis of the course of the operation and postoperative period (till patient’s withdrawal from hospital) has been performed. Colposuspension has been conducted according to professor’s Petri’s tips. Results: The most common complications during the first procedures were: bleeding into Retzius space, transient haematuria and residual of urine after miction. Their incidence diminished with the increasing of number of procedures. The presence of highly experienced team during the operation lowered the risk of complications. Conclusions: Percentage of complications during and after modified Burch colposuspension is low and it decreases with the number of procedures.