The present invention provides a motion evaluation system and a motion evaluation method using the same, which can evaluate a precise motion of an object such as a couch. The motion evaluation system comprises: a laser member to display a reference point of a first coordinate system a marker member which includes a body unit including a first surface and a second surface parallel with the first surface, a reference display unit to display the center of the first surface, and a plurality of markers separated from the reference display unit and arranged on the first surface, and is arranged on an object to match the reference display unit and the reference point a plurality of cameras to photograph the plurality of markers to generate coordinate images a first coordinate calculation unit to use previously stored separation distances of the markers and a first distance between the first surface and the second surface to calculate first coordinate values of the markers on the first coordinate system a second coordinate calculation unit to calculate second coordinate values of the markers on a second coordinate system by using the coordinate images generated by the cameras and a coordinate conversion unit to derive a conversion relationship between the first and the second coordinate system by using the first and the second coordinate values of the markers and convert second motion information on the second coordinate system corresponding to a motion of the object acquired by using the cameras into first motion information on the first coordinate system.COPYRIGHT KIPO 2017
