Abstract: The thoracic aorta of normal subjects （n=218,10～70 years old）,hypertension group （n=58,40～75 years old）,and hyperlipolipoidemia group （n=25,40～75 years old） were measured by the echocardiogram,showed:the beta index of the aortic stiffness of normal subjects expressed significant positive relation with age （r=\0.9734）.\There was significant difference in hypertensive patients and the control group （P＜0.01）.But the beta index of thoracic aorta in hypertensive group didn’t express significant positive relation with age（r=0.1698） between male （n=30） and female （n=28）（P＞0.05）.Patients accompanied by hyperlipoidemia （n=25） and non-hyperlipoidemia （n=21） also no significant difference （P＞\0.05\）.Echocardiogram may be considered as a method to estimate the stiffness of the thoracic aortic in hypertension patients.