Acute renal failure is rare postoperative complication of cesarean section. Postrenal acute renal failure is corectible ant it shoud be done immediately in order to avoid secundary destruction of renal parenchim. Surgical techniques shoud be directed to achieve adequat haemostasis, espetialy at low transverse Pfannenstiel incision, as well as in tender manipuliating with tissues to prevent unnecessery formation of dead space and tissues devitalisation. Authors are presenting the case of acute renal failure after cesarean section as a consequence of hematoma of the retropubic space of Retzius and way of treatment.