Abstract: Objective To analyze the calculus composition and characteristic for patients from  Shiyan area，so as to provide a basis for the prevention and treatment of urinary  stone.Methods Stone specimens from  999 patients with urinary tract stone were collected in our hospital from Jan.2017 to sep.2018.The stone composition was detected and analyzed by infrared spectrum automatic analysis system，and then the clinical characteristics of them were analyzed.Results The main components of urinary stones were calcium oxalate（89.79%）and carbonate apatite（50.95%），and almost weremixed stone.The overall male/female ratio was 2.41/1，and the overall upper urinary tract stone/lower urinary tract stone ratio was 13.27∶1.The overall high-incidence age of upper urinary tract stone ranged from 40 to 59 years old，however  the overall high-incidence age of lower urinary tract stone was over 59 years old.There  were significant difference beween men and women about calcium oxalate stone，carbonate apatite stone，anhydrous uric acid stone（P<0.05），whereas there were no significant difference between men and women about magnesium ammonium phosphate stone，cystine stone（P>0.05）.Conclusion The main components urinary stones are calcium oxalate stone，carbonate apatite stone in patients from Shiyan area.We analyze the calculus compositions and factors  in order to the prevention and treatment of urinary stones  more effectively.

Key words: Shiyan area, Urolithiasis, stone composition