Objective To investigate the influence of bradycardia in patients of acute cervical cord injury. Methods A total of 184 patients with acute cervical cord injury were included. The influences of position and severity of cervical cord injury, combination with cerebral injury or not, with/without hyponatremia and with/without respiratory failureⅡon bradycardia incidence were analyzed by using single factor analysis and logistic regression analysis. Results In 184 patients, 102 patients with bradycardia were enrolled in bradycardia group and 82 patients without bradycardia were enrolled in control group. The position of cervical cord injury and rate of hyponatremia in two groups had no significant differences (P > 0.05). The severity of cervical cord injury, rate of brain trauma and rate of respiratory failureⅡ between two groups had significant differences (P < 0.05). Conclusions The severity of cervical cord injury is important influencing factor of bradycardia after cervical cord injury.With/without respiratory failureⅡand with/without cerebral injury are influencing factors of bradycardia after acute spinal cord injury,which may relate with the severity of cervical cord injury.