Thoracoscopic surgery plays a very important role in thoracic surgery, and the role of this surgery mainly includes that it can effectively diagnose and treat thoracic surgery diseases. 1. Systematic diagnosis of diseases: Because thoracoscopy can enlarge the patient’s thoracic field of view and display subtle thoracic foci, it can be used in thoracic surgery to comprehensively observe the thoracic cavity, take photographs and records, as well as collect tissues for pathological biopsy, etc. It can be used in thoracic surgery to diagnose and treat diseases. Specifically, it can be applied to patients with pleural lesions, patients with pleural effusion of unknown etiology, mediastinal tumor biopsy and other purposes. 2. Precise surgical treatment of thoracic diseases: Because thoracoscopy is highly safe and efficient in determining the scope of surgical resection, it is widely used in the surgical treatment of many diseases, such as lung surface fibrous membrane stripping, abscess irrigation, and lymph node dissection for lung cancer. Thoracoscopic surgery needs to be combined with the patient’s condition for comprehensive consideration, and it is recommended that patients go to regular hospitals to consult professional doctors in time.