Objective To discuss a new method on treatment of the nephroptosis. Methods Seven patients of nephroptosis were treated with polypropylene ventrofixation on the twelfth rib.There were 2 male cases and 5 females.The patients aged from 14 to 46 years old.Height were a-mong 150 and 183 cm and weight from 45 to 68 kg.There were 5 cases with right side lesions,l case left and 1 case bilateral.The operation was performed through the lumbar incision.A polypropylene net string was put betw,een the fibrous capsule of the kidney and the adipose capsule,across the lower pole of the kidney.After adj usted the tension,the string was fixed by silk suture or by rivet after the silk running around the twelfth rib.IVU(intravenous urogram)was performed to compare the posi-tion of kidney pre-and post operation. Results The operations were successfully done.Averagc time of the operation was 65 min(from 50 to 90 min)and average hospital stay was 8 d(from 7 to 9 d).Average time lying in bed was 7 d(between 6 and 8 d).The symptoms of waist soreness.1umbo-dynia,hematuria,frequent micturition relieved.The follow up time was from 1 2 to 3 6 months with an average of 24 months. In 4 cases of hydronephrosis and calculus,3 cases were cured and 1 case was lightened.One case of repeated urinary tract infection,urinary sediment was normal and irritation symptoms disappeared.For l case with Dietl syndrome,the symptoms of nephric colic,nausea,pal-lor,exhaustion,hematuria disappeared. Conclusion The Polypropylene ventrofixation on twelfth rib might be alternative treatment choice for nephroptosis.