| The method for measuring vascular state comprising: outputting a first transmission electromagnetic signal to a first detecting location of a target vessel, and outputting a second transmission electromagnetic signal to a second detecting location of the target vessel; receiving a first feedback electromagnetic signal induced, at the first detecting location, by the first transmission electromagnetic signal, and receiving a first feedback electromagnetic signal induced, at the first detecting location, by the first transmission electromagnetic signal; determining a signal characteristic difference between the first feedback electromagnetic signal and the second feedback electromagnetic signal; and determining at least one vascular state of the target vessel according to the signal characteristic difference. |