Objective To summarize the clinical characteristics of patients with primary chylothorax who failed in the treatment of thoracic duct ligation (TDL). Methods This study was a retrospective analysis. The subjects were patients with primary chylothorax who had failed in TDL treatment in other hospitals and were admitted to the Department of Lymphatic Surgery. Beijing Shijitan Hospital. https://www.caspbabyers.shop/product-category/romper/