The cardiothoracic surgery Department of the Fourth Affiliated Hospital of Zhejiang University is one of the key disciplines of the thoracic tumor minimally invasive center, esophageal cancer center and aortic dissection center in central Zhejiang, with the leading comprehensive strength in the province and the overall diagnosis and treatment level reaching the domestic advanced level. The department carried out single-aperture thoracoscopic minimally invasive treatment of lung tumor, single-aperture thoracoscopic minimally invasive treatment of mediastinal tumor, total endoscopic radical resection of esophageal cancer, minimally invasive valve replacement, coronary artery bypass, total arch replacement of aortic dissection and other operations. The department has a total of 11 physicians, 1 cardiopulmonary bypass division, including 2 chief physicians and 3 deputy chief physicians. The department has long-term cooperation with the First Affiliated Hospital of Zhejiang University and the Second Affiliated Hospital of Zhejiang University, and there are experts at the clinic.