Vibration active control is one kind of main methods to eliminate interference and improve machining accuracy. The premise of vibration active control is the precise measurement of micro-vibration signal whose frequency is upper 5 kHz. A full-fiber micro-vibration distributed sensor is designed using frequency modulated consecutive wave (FMCW) and light intensity modulation technology, aiming at the shortage of existing grating sensor used for micro-vibration signal measurement, such as low frequency, complex structure and individual measurement etc. Through piezoelectric transducer (PZT) micro-vibration measuring experiment and simulation, it can prove that top frequency of 60 kHz for distributed measurement is achieved.