Surgical treatment: In 1939, Blalock (23) performed the first successful thymectomy for a 19-year-old female patient with myasthenia gravis, and her symptoms were significantly relieved after the operation. With the improvement of anesthesia technique, surgical method and respiratory management in recent years, thymectomy is safer and the surgical efficacy, especially the long-term effect, is very satisfactory. Indications for surgery 1. Any case of thymoma or non-thymoma, but with rapid progression and unsatisfactory response to anticholinesterase drug therapy, regardless of whether the anti-AchR antibody is increased, can be thymectomized. The American Academy of Neurology Quality Standards Committee evaluated the effectiveness of thymectomy and concluded that early thymectomy is more valuable than late thymectomy in the natural course of the development of myasthenia gravis. 2, female patients between 30-40 years of age, patients with generalized myasthenia gravis with short duration and mild disease with thymic hyperplasia 3, myasthenia gravis with simple eye muscle Nakamura pointed out that surgery for myasthenia gravis with simple eye muscle is safe and effective, and can prevent the transformation to generalized. In China, Zeng Lianqian, Li Hao, etc., have been working on the diagnosis of myasthenia gravis. In China, Zeng Lianqian and Li Hao reported the use of thymectomy to treat myasthenia gravis, which included the simple eye muscle type. However, for mild cases and preschool children, drug therapy is used as much as possible. 4. Patients with myasthenia gravis are generally not suitable for surgery, but should be treated with medication first, and then surgery can reduce the occurrence of postoperative crisis after the symptoms are controlled. If drug treatment is not effective, the condition cannot be stabilized and only a few cases have been reported in the critical phase of surgery. The surgical route–thoracoscopic thymectomy was first reported by Jacobaeus in 1910 for the treatment of pulmonary tuberculosis by thoracoscopic pleural adhesions, and then developed into video-assisted thoracoscopic surgery (VATS) in the early 1990s. . The clinical application of modern thoracoscopic surgery has created conditions for the development of “minimally invasive” thoracic surgery techniques. In addition to the advantages of thoracoscopic surgery such as less trauma, less pain, faster recovery and aesthetics, this technology has improved the operator’s vision and field of view to a greater extent, expanded the scope of surgery, facilitated intraoperative cooperation, and improved the speed and quality of surgery with high-quality surgical instruments.