Whether bile duct dilatation in children can be cured is related to the cause of the disease. Those induced by bile duct stones can be cured; those induced by other factors are difficult to be cured. 1. Choledocholithiasis: If the bile duct dilatation is induced by choledocholithiasis, the patient can undergo nuclear magnetic resonance (NMR) to find out the severity of the dilatation, and then consider undergoing the Roux-en-Y anastomosis of the hepatic bile ducts after the diagnosis is made, which can generally be cured. 2. Other factors: for example, if the bile ducts show multiple dilatation or are induced by cholangiocarcinoma, it is usually necessary to undergo liver transplantation to be cured, otherwise, it is difficult to be cured by ordinary treatment methods. Therefore, it is suggested that once the child is diagnosed with bile duct dilatation, it is necessary to choose the suitable treatment method under the guidance of specialists and treat the child as early as possible to avoid affecting the child’s health.