Abstract: Objective: To explore the treatment of ureteral calculus complicated with renal colic during gestation period.Methods: Seventeen patients with ureteral calculus complicated with renal colic during the gestation period were treated with conservative treatment at first.Six patients symptoms disappeared after conservative treatment.Eleven cases were additionally treated with the cystoscopic ureteral double-J stenting due to their unsatisfactory conservative effects,2 cases were continuously treated with conservative treatment and 1 case were treated with the percutaneous nephrostomy under local anesthesia.Results: All symptoms in patients with renal colic were improved.Among 8 cases treated with double-J stenting,the stone of 1 case was discharged during the stent implanting,the stones of 5 cases were discharged by drugs combined with Extracorporeal shock wave lithotripsy from the stent implanting to the end of puerperium,and the stones of 2 cases failed to discharge,then who were treated with Ureteroscopic-holmium laser lithotripsy at the end of the puerperium.No accidental pregnancy termination case were found.Conclusions: The treatment of ureteral calculus complicated with renal colic during gestation period with ureteral catheter stenting under cystoscope is a safe and effective method.