The present invention relates to an electrode device for measuring impedance within a human body, and to an apparatus using the same for measuring impedance within a human body and performing acupuncture treatment using the measured impedance, which can automatically and precisely determine locations of meridians within the human body, form a three-dimensional image of the determined locations, and enable acupuncture treatment to be performed precisely. The electrode device for measuring impedance within a human body comprises: a cylindrical housing member having a guide rod mounted to an open side thereof a cylindrical electrode member configured to be pressed against the skin of a human body and moved back and forth through the open side along the guide rod and a resilient member interposed between the cylindrical electrode member and the cylindrical housing member to resiliently move the cylindrical electrode member back and forth along the guide rod.
