Objective:To discuss the relative factors of carotid calcification in maintenance peritoneal dialysis patients. Methods:One hundred patients with maintenance peritoneal dialysis in the Central Hospital of Mianyang were involved and divided into carotid artery calcification group（55 cases）and the normal group（45 cases）according to whether having carotid artery calcification. Their general dialysis data were collected for the evaluation of dialysis adequacy and residual renal function. The calcification of carotid arteries was assessed by the color Doppler ultrasonography. The independent risk factors for carotid artery thickening and calcification were analyzed by binary logistic regression analysis. Results:Compared with those of normal group

the age（42.36±8.79 vs. 34.93±9.60）years

fasting blood glucose（6.91±0.44 vs. 6.66±0.30）mmol/L

calcium and phosphorus product（3.98±0.40 vs. 3.82±0.30）mmol/L

parathyroid hormone（270.72±30.24 vs. 260.23±11.05）ng/L in the carotid artery calcification group were increased（P

<

0.05）

while the residual renal function（2.25±0.74 vs. 5.14±1.07）m L/min

total creatinine clearance rate（Ccr）（59.92±3.94 vs. 66.11±7.01）L/（week·1.73 m

2

）

residual kidney Ccr（19.66±2.85 vs. 25.07±6.53）L/（week·1.73 m

2

）

urea clearance index（Kt/V）（4.06±0.51 vs.4.46±0.39）

residual kidney Kt/V（1.12±0.30 vs. 1.45±0.28）were decreased. Logistic regression analysis showed that dialysis age（OR=1.218

P=0.039）

the calcium-phosphorus product（OR=70.403

P=0.037）

the residual renal function（OR=0.030

P=0.001）and the residual kidney Ccr（OR=0.692

P=0.015）were associated with carotid intimal thickening and calcification. Conclusion:Carotid artery calcification is prevalent in maintenance peritoneal dialysis patients. Dialysis ages

calcium and phosphorus product

residual renal function are independent risk factors for carotid artery calcification.