This article introduces ZHOU Shaohua’ s experience in treating myasthenia gravis. Myasthenia gravis belongs to "Wei-syndrome"and "severe blepharoptosis". The pathogenesis is deficiency of kidney essence

the key treating principle is tonifying kidney

and Yougui Wan（ 右 归 丸） is often used. Doctor ZHOU holds that

the syndrome classification of myasthenia gravis should use the disease-syndrome combination model

which means to combine the modern medicine classification and the Chinese medicine four-syndrome features to conclude four types:liver-kidney deficiency（ type Ⅰ

simple eye muscle involved）

middle-Jiao deficiency（ type Ⅱ a

mild systematic disease）

spleen-kidney Yang deficiency（ type Ⅱb

moderate systematic disease）

and vital Qi exhaustion（ type Ⅳ

severely involved）. ZHOU uses tonifying kidney method in treating all the types.