This research introduces the interactive fairy tale system based on BCI and Motion Sensing Technology for Children with ADHD. ADHD is a specific disorder which shows deficits in sustained attention, behavioral inhibition, resistance to distraction, and the regulation of one’s activity level to the demands of a situation (hyperactivity or restlessness). The interactive fairy tale system implemented on the Unity3D engine is expected to keep track of a player's time-varying brainwave and motion logs through NeuroSky’s MindWave Brain-Computer Interface (BCI) and Microsoft’s Kinect motion sensing technology. The proposed system helps us take a closer look at the player's behavior than performing a video shoot or direct observation. In addition, as the system keeps the observed data, it is possible to constantly track the changes on the player's brainwave and behavior, and synthetically assess the effect of the proposed approach from many different aspects.