The present invention provides a motion tracking device comprising: a marker tracking unit, which photographs a detection marker attached to a preset area of a human body so as to generate a marker image; a photographing unit, which photographs the human body so as to generate a human body image; and a processor unit, which receives the marker image from the marker tracking unit so as to detect marker information, receives the human body image from the photographing unit so as to detect the frame information, and uses the marker information and the frame information so as to derive operation information about the human body.
