A concentration measuring device using motion detection is disclosed. The concentration measuring device includes: a concentration measuring unit (110) sensing a motion with a sensor value measured by an acceleration sensor (111) and transmitting the sensed motion data to a concentration measuring apparatus (120)； and the concentration measuring apparatus (120) setting measurements, receiving the motion data from the concentration measuring unit (110), calculating a motion pattern based on the received motion data, starting the set measurements, processing the calculated motion pattern at the passage of times when the measurements are started, determining whether the motion is detected, reducing a concentration index when the motion is detected, increasing the concentration index when the motion is not detected, displaying, in a graph, the trend for the concentration index, and outputting a concentration level based on the trend for the concentration index displayed in the graph. The concentration measuring apparatus (120) sets RGB color values differently based on a numerical value of the concentration level and changes the color of an image of the concentration measuring apparatus (120) according to the RGB color values set differently. Accordingly, the motion data can be received from the concentration measuring unit (110), the motion pattern can be calculated based on the received motion data, the calculated motion pattern can be processed, it can be determined whether the motion is detected, and the concentration index can be reduced when the motion is detected, the concentration index can be increased when the motion is not detected, the trend for the concentration index can be displayed in the graph, and the concentration level based on the trend for the concentration index displayed in the graph can be output.COPYRIGHT KIPO 2018움직임 감지를 이용한 집중력 측정 장치가 개시된다. 가속도 센서(111)로 측정된 센서 값으로 움직임을 감지하고 감지된 움직임 데이터를 집중력 측정 장치(120)로 전송하는 집중력 측정부(110)； 및 측정을 설정하고, 집중력 측정부(1
