The relationship between endothelial dysfunction and hypertension is a close one.On one hand,endothelial dysfunction may promote the occurrence and the development of hypertension.On the other hand,hypertension may induce endothelial dysfunction,and aggravate it.This article reviews the physiological function of vascular endothelial cells,the correlation factor of endothelial dysfunction,the relations of endothelial dysfunction with hypertension,the detection methods of the endothelial function,and the recovery of the endothelial dysfunction.