[The meaning and indication of "Rou Ji"].

"Rou Ji", as a name of disease syndrome, played an important role with its relevant theories and clinical experiences in historical recordings. However, it was treasured neither in modern archives nor by clinical physicians. The concept of "Rou Ji" started in the Spring and Autumn Period and the Warring States Period (770 B.C. - 221 B.C.), and its name was first found in Shan Fan Fang in the Southern and Northern Dynasties (420-589). The symptoms of this disease mainly suggested weakness of limbs caused by exogenous factors. It was gradually developed into following symptoms, such like emaciation or muscle atrophy, fatigue, skin color change, abnormal skin sensation, poor digestion and absorption function of spleen and stomach. Its etiology was changed from exogenous factors into internal injuries and deficiency of congenital Qi. Its treatment was also changed with the change of the understanding of diseases. The dialectical thinking in its treatment in ancient medical materials may have reference value for current clinical diagnosis and treatment.