This paper presents the development of a wireless integrated wearable interactive music system - Musfit. The system was built according the intension of integrating the motion of hands (fingers), head, and feet of a performer to music performance. The device of the system consists of a pair of gloves, a pair of shoes, and a cap, which were embedded various sensors to detect the body motion of a performer. The data from detecting was transmitted to computer via wireless device and then mapped into various parameters of sound effectors built on Max/MSP for interactive music performance. The ultimate goal of the system is to free the performing space of the player, to increase technological transparency of performing and, as a result, to promote the interests of interactive music performance. At the present stage, the progression of prototyping a wireless integrated wearable interactive music system has reached the goal we expected. Further studies are needed in order to assess and improve playability and stability of the system, in such a way that it can be effectively employed in concerts eventually.