PROBLEM TO BE SOLVED: To make a waveform of an electrocardiogram clearer and reduce mixing of an electromyogram when bringing together electrodes used for an electrocardiogram monitor using bipolar dielectric on one sheet or the like.SOLUTION: An electrode unit for electrocardiographic measurement includes: an electrode pad composed of one sheet body or plate body in which a positive electrode, a negative electrode, and a ground electrode are fixed so as to be exposed on the rear surface side, and the rear surface side can be fixed on a human body surface so that each electrode comes in contact with the human body surface and an electric cable having three wires electrically connected with the positive electrode, the negative electrode, and the ground electrode respectively, which can be connected to an electrocardiogram monitor using bipolar dielectric. An electric resistance value from the positive electrode to the electrocardiogram monitor is smaller than an electric resistance value from the negative electrode to the electrocardiogram monitor.SELECTED DRAWING: Figure 1
