Methods A total of 20 pregnant women with ureteral calculus underwent holmium laser lithotripsy through ureteropyeloscopy.

Conclusion: Ureteroscopy with holmium: YAG laser lithotripsy for upper ureteral calculi is more effective than ESWL.

Conclusion the Holmium laser treatment of ureter calculi by ureteroscopy is an effective and safe technique, and has the advantages as minimally invasion and low incidence of complication.