Myasthenia gravis is a common neurological disease, primarily an autoimmune disorder. It typically results in symptoms that are worse in the evening and fluctuate throughout the day, mainly manifesting as limb weakness, double vision, swallowing difficulties, and speech impairments. In severe cases, it can even affect respiration, leading to weakness of the respiratory muscles and necessitating the assistance of a ventilator. The key examinations for myasthenia gravis include: Firstly, a chest CT scan. Many patients with myasthenia gravis have thymic hyperplasia or thymomas, making this scan crucial. Secondly, repetitive nerve stimulation electromyography. This test can detect amplitude decrement in response to stimulation, which is significant for diagnosing the disease. Thirdly, testing for specific antibodies related to myasthenia gravis, such as acetylcholine receptor antibodies. The presence of these antibodies is very important for diagnosis. Additionally, other tests such as erythrocyte sedimentation rate and thyroid function tests are also conducted.