Objective: We sought to analyse risk factors of the patients after intraoperative cardiac arrest in our hospital, a retrospective case analysis of all intraoperative cardiac arrest was done to determine the cause and the outcome of cardiac arrest. Methods: Medical records of noncardiac surgery patients who experienced cardiac arrest during the intraoperative period between January, 2005 and December, 2009 were reviewed. Results: There were 48 164 patients (except local anesthesia) undergoing noncardiac surgical procedures in our hospital during this time. Intraoperative cardiac arrest occurred in 16,the incidence of cardiac arrest was 3.32 /10 000.Immediate survival after cardiac arrest was 9/16(56%) in this study. Age, gender, weight, and hemodynamic status before the surgery were no difference between patients who were resuscitated or not. There were lower preoperative hemoglobin concentration of the patients in the unresuscitated group(Hb=115±30) compared to the resuscitated group(Hb=133±17) (P＜0.05),and there were higher pre-operation ASA physical status (ASA PS) of the patients in the unresuscitated group compared to the resuscitated group (P＜0.05). Survival was significantly higher in patients with ASA PS of Ⅰ or Ⅱ compared to those with ASA PS of Ⅲ or higher. Preoperative blood glucose value and ST-T changes of electrocardiogram （ECG）were no significant difference between the resuscitated and the unresuscitated patients (P＞0.05). The methods of anesthesia have no effects on the survival between the resuscitated and the unresuscitated patients (P＞0.05). Among 16 patients with cardiac arrest,12 patients（75%）had preoperative ischemic ECG changes,5 patients（31%）were related to massive blood loss. Conclusion: Intraoperative cardiac arrest was related to preoperative ischemic ECG changes. Lower preoperative hemoglobin concentration and higher ASA PS are the risk factors of death in patients with intraoperative cardiac arrest.