RESUMO
Biliary atresia is a serious congenital malformation that threatens the life of newborns.At present, the treatment of biliary atresia mainly relies on Kasai portoenterostomy which is also named hepatoportoenterostomy to correct the dysplastic biliary system.Cholangitis is the most common and intractable complication after Kasai portoenterostomy.The pathogenesis is still unidentified.Many factors including ascending infection of intestinal bacteria, abnormal development of intrahepatic bile duct, surgical injury, reflux of intestinal contentscan and so on can affect the occurrence and development of the disease.The initial time and frequency of cholangitis can affect the postoperative primary liver function, so it is especially important to diagnose and treat it timely.The diagnosis of post-Kasai cholangitis is lack of specificity, mainly based on clinical manifestations, biochemical abnormalities and surgical history.For intractable cholangitis should consider completing radioisotope hepatobiliary imaging, percutaneous cholangiography and single or double-balloon enteroscopy.The main focus of prevention and treatment lies in preoperative care, surgical improvement and postoperative care, as well as drug prevention during disease follow-up.