By adopting the method of different disease of a same syndrome

different syndromes of a same disease

and correlative syndromes as control

indices of contents of serum noradrenalin （NE）

adrenaline （E）

average blood circulatory velocity （Vm） of middle cerebral artery （MCA）

and velocity of blood flow at systolic peak （Vs） were selected for studying the syndrome of hyperactivity of liver-yang. Results revealed that the values of all 4 indices were higher than those of normal person and groups of asthenic syndrome of liver and kidney yin

and deficient - Qi - static - blood syndrome. MCA - Vm

Vs values were markedly higher than those in flaring - up of liver fire syndrome

syndrome of evil wind transformed from liver yang. Comparison of 4 indices between hyeractivity of liver yang due to hypertension

and different syndromes of the same disease （including flaring - up of liver fire

yin - deficiency of river -kidney） showed that

in the hyperactivity of liver yang syndrome

the serum NE

E were all markedly higher than syndrome of deficiency yin of liver - kidney; while MCA -Vm

Vs were markedly higher than that of the syndrome of flaring -up of liver fire and yin -deficiency of liver -kidney. In hyperactivity of liver -yang syndrome

there was a positive correlation NE and E

MCA - Vm and Vs

NE and Vs

demonstrating that the 4 indices can be served as a comprehensive index for diagnosis of hyperactivity of liver yang syndrome.