In this research, method of clinical epidemiology and symbolic statistics were applied. Trough the investigation of 164 clinical diseases of nervous system, author emphasized on analyzing the disturbing law of manifestation in " deficiency of kidney" of the disease of nervous system. And with this basis, there was discussion on the metrological diagnosis for the diagnosis to the " deficiency of kidney" of the disease of nervous system. In the same time ,author provide the ground of symbolic statistics for the macroscopic differentiation of herbal syndrome.The result showed that 8 syndromes, such as tenderness or depression of Kidney-shu point, have significant on the dignosis for the deficiency of kidney. Those is their ratio: 1. tenderness or depression of Kidney-shu point 26; 2. few or falling of the hair or tooth 10;3. coldness of low limb 12; 4. crevice of sole 8; 5. the looseness or low abdomen 18; 6.the blackness of face 4;7flexible tongue and short fur 4;8.infirmness chi-pulse 12.in this table it is proved that the rateof accordness is 93.29%, the fault rate ;the sus susceptibility 95%; the degree of differential rate 91.67%. the result accord to the expect. |