Objective To develop a nomogram model to predict intraoperative hypothermia in children, and to provide reference for assessment and prophylaxis of hypothermia during surgery in pediatric patients. Methods A total of 1 086 children undergoing surgical treatment were included in this study and their data were collected through medical records.Chi-square test, Wilcoxon rank sum test and logistic regression analysis were performed to determine the risk factors, then R software was utilized to develop a nomogram prediction model. Results The incidence of hypothermia during surgery was 17.31%. Age, preoperative body temperature ≤36.9 degrees, hemoglobin ≤118.5 g/L, fasting duration ≥6 h, and anesthesia duration ＞62.6 min were independent risk factors for intraoperative hypothermia. An area under ROC curve in our nomogram reached 0.698(95%CI:0.598-0.789). Conclusion The prevalence of hypothermia during surgery in children was relatively high, and our nomogram could predict the probability of hypothermia, thus to help medical staff take targeted interventions and ensure safety of children.