This paper presents a vision-based interactive music conducting practice system. A fast mean-shift object tracking algorithm is implemented to track the baton of the conductor in real time. By analyzing the tracked baton path, the conducting tempo is determined. When practicing, the system provides both visual and audio cues to help user to improve their steadiness. Furthermore, practice conduction of MP3 music with realtime feedback is possible. Experimental results show that the system is robust in terms of baton tracking and tempo detection. Furthermore, music conduction experiments show that the practicing system is effective for steading user's conducting tempo and enhancing conducting skills with only limited number of practices.