Myasthenia gravis is a systemic disease and most patients are seen in neurology, however, recent studies have shown that surgical treatment has an important role in the treatment of patients with myasthenia gravis. The following conditions require surgical treatment: 1. myasthenia gravis combined with thymoma and thymic hyperplasia, myasthenia gravis can be effectively relieved after surgical removal of thymoma and thymus. Reduce the amount of medication and medication time. 2.Patients with poor effect of internal medicine treatment and disease progression. 3.Simple ocular muscle type myasthenia gravis. This kind of myasthenia gravis has a simple condition and no other complications, so it can be operated. The surgery is safe and effective, and can prevent its transformation into a generalized type. In recent years, with the development of TV thoracoscopic minimally invasive surgery, surgery for myasthenia gravis does not need to split the sternum, and the surgical trauma is greatly reduced. The majority (86%) of patients with the so-called “simple” oculomotor type will develop the generalized type within one year.