The urological complications of surgical interventions are discussed on the basis of the authors' clinical material collected over six years. Mainly fistulas and inflammatory complications occurred due to gynaecological operations performed by abdominal penetration. The possibilities and incidence of complications, as well as the diagnostic methods used for their detection and the applied therapies are reviewed. The importance of the proper choice of restituting surgical interventions is stressed. Complete anatomical and functional restoration and preservation of the organ are attempted. Attention is called to the importance and possibilities of preventing complications due to injuries. In the reduction of the incidence of urological complications after gynaecological operations, beside prevention, a close co-operation with the urologist is necessary as well as post-operative check-ups even in symptomless cases.