This paper studies the on-line monitoring technology of aeolian vibration in transmission lines based on optical fiber sensing method. A new passive sensor with main structure of embedded FBG cantilever beam is verified feasible and the first fiber grating breeze vibration monitoring sensor is developed successfully according to the calculation results. The sensor can be calibrated through relationship between aeolian vibration frequency

amplitude change and the change of FBG stress. And the designed system is tested to be effective to measure breeze vibration and the sensor can finally meet the monitoring regulation with frequency 0 to 150 Hz and the amplitude 0 to 0.6 mm.