Abstract: This paper proposes an FBG sensor packaged with glass fiber reinforced plastic to meet the monitoring requirements of wind turbine blades, and studies the influence of different packaging parameters on its sensing performance. Firstly, create a three-dimensional model of the test piece and conduct finite element simulation to study the influence of the length and width of the test piece on the sensor performance. Then, prepare GFRP-FBG sensors of different specifications and study their strain and temperature response characteristics. The experimental results show that the strain sensitivity coefficient increases with the increase of sensor length and decreases with the increase of layer number. The experimental results are consistent with the simulation results.