Myasthenia gravis (MG) is a acetylcholine receptor regulated, antibody-mediated, cell-mediated immunity depended, complement-regulated autoimmune disease. It is considered that MG' s pathogenesis is deficiency of spleen-qi and grastic-qi, and the five internal organs due to asthenia of viscera. Glucocorticosteroid and immunosuppressants are important durgs commonly which treat MG commonly now, but it is easy to bring the other effects that resulting from repeated use and recidivate quickly. Otherwise TCM ha...