Objective:Analyze the perioperative data of children undergoing cardiopulmonary bypass(CPB) for congenital heart disease under the management of ultra-fast track anesthesia(UFTA), the factors of CPB are discussed.Methods:1 034 children who underwent CPB from May 2018 to August 2019 were analyzed retrospectively. According to the success of anesthesia, they were divided into two groups: UFTA group and UFTA failure group. Propensity score matching was used to screen the children with preoperative baseline data matching. Finally 346 cases in each group. The possible CPB factors of the two groups were analyzed by single factor analysis, and the statistically significant factors were analyzed by logistic regression analysis. Results:Univariate analysis showed that the CPB and aortic occlusion time, the lowest temperature and lowest hematocrit in CPB, the dosage of crystalloid and suspended erythrocytes, the second or more times of CPB, and the blood lactate after CPB were the factors influencing the ultra-fast track anesthesia. Logistic regression analysis showed that the time of CPB and aortic occlusion, the value of blood lactate, the dosage of suspended erythrocytes, and the second or more times of CPB were the independent influencing factors of ultra-fast track anesthesia. In the UFTA failure group, the postoperative hospitalization time, the length of stay in the ICU and the hospitalization cost were all higher than those in the ultra-fast track group. Conclusion:CPB time, aortic occlusion time, blood lactate after CPB, the dosage of suspended erythrocytes, secondary or multiple CPB were independent risk factors for UFTA.UFTA is beneficial to shorten the postoperative hospital stay, the ICU stay and the cost of hospitalization.