PURPOSE: A portable electrocardiogram measuring device which has an electrode structure to be simply used for a portable or domestic use is provided by which patients are able to easily measure electrocardiogram without regard to a place. CONSTITUTION: The portable electrocardiogram measuring device comprises: (i) two handle type electrodes which are formed to be held by both hands of a user; (ii) two step type electrodes where two feet of a user are able to be put on; and (iii) an electrocardiogram measuring portion which are able to be electrically connected to the above four electrodes, wherein the four electrodes are Ag-AgCl electrode.
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