1.Medication 1.Cholinesterase inhibitor: Bromipyridostigmine 60mg-120mg/dose, 3-4 times a day, if there is swallowing difficulty, you can take the drug 30 minutes before meal to ensure that the meal has taken effect. 2.Adrenocorticotropic hormone: Methylprednisolone shock treatment 500mg-1000mg/day, shock 3-5 days, gradually reduce the dose to 1mg/kg body weight to maintain. Until the symptoms are completely relieved and then stabilized for 1-2 months, start to reduce the dose, the whole reduction process takes more than 1 year. Or direct oral prednisone 60-100mg/day until the symptoms are completely relieved and stable for 1-2 months, then start to reduce the dose, the whole reduction process needs more than 1 year. 3. Immunosuppressants: Azathioprine 50mg-100mg/day Cyclophosphamide 50mg three times a day, or 200mg intravenous injection, three times a week, total 10-20g Cyclosporine A 6mg/kg.d, 12 months as a 4. Human immunoglobulin: gammaglobulin 0.4g/(kg.d), 3-5 days as a course of treatment, for heavy patients and myasthenia gravis crisis. II. Thymectomy 70% of patients can benefit from thymectomy, but most of them need medication after thymectomy. III. Plasma exchange For myasthenia gravis crisis and refractory myasthenia gravis.