An object of the present invention is to provide an electrocardiogram measuring apparatus capable of greatly reducing the number of electrodes and measuring even a weak signal. The present invention relates to a first electrode and a second electrode brought into contact with a body surface near an artery, an electrocardiogram measuring means for measuring a signal obtained from the first electrode and the second electrode, and a region where the polarity of the measured signal is reversed. An electrocardiogram measuring apparatus comprising: an arterial position measuring means for determining the position of an artery, and a notifying means for notifying a user of information on the arterial position.本発明の目的は電極数を大幅に削減することができ、しかも微弱な信号でも計測できる心電図計測装置を提供することである。本発明は、動脈付近の体表に接触させる第１電極と第２電極、前記第１電極と前記第２電極から得られる信号を計測する心電図計測手段、前記計測した信号の極性が反転する領域を動脈の位置とする動脈位置計測手段、前記動脈位置の情報を使用者に通知する通知手段を含むことを特徴とする心電図計測装置である。
