Objective: To assess the effectiveness of uterine cooling during cesarean section in reducing postpartum blood loss. Methods: This was a prospective cohort study of 39 patients undergoing cesarean section, who were divided into two groups: 19 patients in the uterine cooling group and 20 patients in the control group. Patients' basic characteristics, including maternal age, gestational age, and parity, were recorded. The mean volume of blood loss and the proportion of patients with blood loss greater than 30 ml were compared between the two groups.