Objectives: to evaluate the result of percutaneous nephrolithotomy (PCNL). Patients and Methods: 206 cases of percutaneous nephrolithotomies have been performed at People's Hospital No.115 from March 2008 to March 2013. Results: Mean age 48 + or - 10 years (from 36 to 70). There were 112 male (54.4 percent) and 94 female (45.6 percent) patients. Renal pelvis calculi 54 cases (26.2 percent), renal pelvico-calyx calculi 136 cases (66 percent) and staghorn stone 16 cases (7.8 percent). Grade of hydronephrosis: grade I 60 cases (29.1 percent), grade II 92 cases (44.7 percent), grade III 16 cases (7.8 percent), no hydronephrosis 38 cases (18.4 percent). For making dilatation, the authors puncture into inferior posterior of the kidney in 162 cases (78.6 percent), middle calyx 38 cases (18.4 percent), superior calyx 6 cases (3 percent). Postoperative outcomes: stone-free 149 cases (74.9 percent), residual fragments which had extracorporeal shockwave lithotripsy 40 cases (20.1 percent), second look for PCNLlO (5 percent), convert to open sugery for remove stone in 7 cases (3.4 percent). There were 6 cases (3 percent) with important intraoperative bleeding which required stopping the procedure and there was 1 ca (0.5 percent) nephrectomy for control the bleeding. Mean operating time 86.24 mins (50 - 180). Conclusions: PCNL is an effective, safe, aesthetic methode for treating renal calculi, but this methode require more equipment and experiences in practice.