Abstract: 【Abstract】Objective Placing peritoneal dialysis( PD) catheter in the right place of abdominal cavity was critical for peritoneal dialysis． Our trial was to investigate the effect of application of X-ray in the positioning of the catheter in peritoneal dialysis catheter implantation to reduce the catheter-related complications. Methods From April 1, 2009 to June 30, 2012 ,A total of 124 patients diagnosed as CKD grade 5 were assigned into conventional operation group (group A, n=62 ) and X-ray positioning group(group B, n=62) based on random. group B steps are the same as group A, pursestring suture followed on confirmtion by a small C arm X-ray machine of the distal end of the PD catheter located at the bottom of the pelvis.The differences in early and later complications including bleeding, leakage, catheter displacement , omentum circumvolution and peritonitis were compared between the two groups. Results A, B two groups of patients with bleeding rates are 3.2% and 6.5% respectively (P > 0.25); Two groups have no leakage; A, B two group in 1 month catheter displacement rate were 6.4%, 0, respectively ,there was a significant statistical difference (P < 0.05), omentum circumvolution and the incidence of peritonitis no difference between the two groups within one month; within one year ,catheter displacement, omentum circumvolution, and the incidence of peritonitis were no difference between the two groups; within one year， A, B two groups of patients with the overall incidence of complications are 16.1% and 11.3%, respectively，but there was no statistically significant difference between the two groups (P > 0.25). Conclusion Application of X-ray in the positioning of the catheter in peritoneal dialysis catheter implantation can be significantly reduced early (within one month) catheter displacement, reduced general catheter-related complications in early and later complications, worthy of clinical promotion.

Key words: Peritoneal dialysis catheter implantation, Catheter positioning, Complication