ObjectiveTo systemically evaluate the advantage of simplified single-patch technique used in complete atrioventricular septal defects. MethodsA systematic literature search was conducted in PubMed, Annual Reviews, CNKI, Wanfang Data Libraries and Read Show Academic Search, and the retrieval date was March 2016. The literatures were screened and assessed according to inclusion criteria, and analyzed by meta-analysis STATA 11.0 software. The results were represented in standard mean difference (SMD), risk ratio (RR) and 95% confidence interval (CI). ResultsCompared with the two-patch technique group, in the simplified single-patch technique group cardiopulmonary bypass time, aortic clamping time, the length of hospital stay and the ICU stay as well as the mortality rate were satistically less (SMD=-0.93, 95% CI -1.24, -0.61, P=0.000; SMD=-1.02, 95% CI -1.39, -0.66, P=0.000; SMD=-0.10, 95% CI -0.43, -0.23, P=0.035; SMD=-0.12, 95% CI -0.29, -0.05, P=0.555; RR=0.93, 95% CI 0.66, 1.30, P=0.031, respectively). While there was no statistical difference in the reoperation rate (RR=0.87, 95% CI 0.65, 1.17, P=0.398). ConclusionSimplified single-patch technique has dominant superiority in operation time, ICU stay, mortality rate, and correlative complications induced by extracorporeal circulation. However, difference in reoperation rate is not significant.