Objective To investigate the correlation between syndrome characteristics of senile bone loss and bone mineral density （BMD）. Method The Chinese medical syndromes were evaluated in 91 patients with senile bone loss

and other 39 normal old men were chosen as the control group. The statistical methods

such as Pearson correlation analysis

were used to analyse the data. Result The most common Chinese medical syndromes in senile bone loss were the syndrome of deficiency of kidney essence

syndrome of phlegm obstruction

syndrome of qi insufficiency and syndrome of collateral obstructed by blood stasis. There was significant differencse in the syndrome of deficiency of kidney essence and syndrome of phlegm obstruction compared with the control group

and the syndrome of deficiency of kidney essence was correlated to BMD. The syndrome of deficiency of kidney essence and syndrome of phlegm obstruction had negative relations to the speed of sound （SOS） in ultrasonic

which meant the risk of senile bone loss would be greater when the integrals of the syndrome of deficiency of kidney essence and syndrome of phlegm obstruction were increasing. Conclusion BMD was correlated to the syndrome of deficiency of kidney essence and syndrome of phlegm obstruction

which proved these two syndromes could be seen objectively in senile bone loss.