Taking a wide view of the ancient and modern medical classics，vibrating，trembling and shuddering were frequently mentioned by numerous medical practitioners as important indexes of exogenous febrile diseases or endogenousdiseases.Whereas，they were either expressed separately or discussed as a unit from time to time.Various viewpoints all showed their subtlety and excellence，which，however，are not unanimous yet.The authors intended to differentiate vibrating，trembling and shuddering separately by consulting lots of references，and to make the induction and summarization of the clinical diagnosis and treatment of the symptoms of the three indexes.