Objective:To investigate the pathogen culturing of the CRI、CRB and risk factors after cardiovascular surgery in order to provide the beneficial reference for clinic. Methods:A total of 300 cases central venous cathers were determined,and the cusp of the catheters was determined by bacterial culture and blood bacterial culture. Results:The infection happened in 35 of 300 patients with inserted central venous catheter.The cusps of CRI rate was 11.47%,CRB rate was 1.7%. 54.3% pathogens were gram-positive cocci...