This paper introduces a wearable intelligent music correction system, which can promptly remind the music practitioner's playing errors. The system can collect the music information played by the player in real time, find out the music endpoint from the shortterm average energy method and do FFT and subharmonic summation on the signal between the end points as frequency domain feature. The time difference between the two tone ends as time domain feature, through comparison with the standard music to find out the error in the process of playing, the system promptly remind player and record error. The system is small, efficient and energysaving, experiments demonstrate that this system can achieve expected results.