Objective:To study the relation between the total flavonoid content from the total glycosides of ranunculus japoniucus and its function of expanding vessel.Methods:Observed the inhibition effect of different parts of total glycosides of ranunculus japoniucus on contraction of thoracic aortic induced by norepinephrine(NE)with the method of determining the tension of the thoracic aortic rings in vitro on the test rats.Measured the total flavonoid content in different parts of total glycosides of ranunculus ja...