Not all biliary stents have to be removed, but it is necessary to take into account various factors such as the physical condition, the results of the examination and the material of the stent before removing it. Biliary stents are mainly used to keep the bile ducts open, reduce pressure and drainage, and promote the healing of the bile ducts. Stents can be categorized into plastic stents and metal stents. Plastic stents have a shorter lifespan and are recommended to be removed within six months to one year. If obstruction occurs during the implantation of the biliary stent and it cannot drain the bile ducts properly, it needs to be removed in time. However, if the biliary stent is used for drainage and there is no obstruction, it does not need to be removed. If there is a combination of biliary fistula or bleeding, it is not recommended to remove the stent to avoid repeated irritation of the bile duct. Regular checkups and active care are recommended after the placement of a biliary stent to promote recovery.