A light-beam therapeutic apparatus ensured patient safety is disclosed, which includes an apparatus body portion having a light source a light guide rod that guides light from the light source, a connecting socket, a cooling fan, an electronic component that performs control required for a therapy, and a control display panel that displays the contents of therapy a therapeutic portion including a light guide portion including a plurality of bundled optical fibers, and a pad portion formed of the optical fibers spread out adjacently to one another into a flat-panel shape, wherein the therapeutic portion is formed into a light-receiving plug insertable into a connecting socket of the apparatus body portion, and the light-receiving plug is configured to be kept in a coupled state by an attracting action of a permanent magnet provided on the side of the connecting socket.
