By imitating the structure of insect receptor, a bionic hair airflow sensor, surface symmetric electrode with metal core polyvinylidene fluoride(PVDF) fiber sensor(SMPF), is designed and fabricated. Based on the theory of hydrodynamics and the first piezoelectric equation, the air flow sensing model of SMPF is established. An experimental system is built to verify the sensing ability of SMPF for airflow velocity. The experimental results show that the output signal of SMPF has a linear relationship with the square of air velocity. The experimental results show that the output signal of SMPF has a linear relationship with the square of the airflow velocity, which validates the theoretical model and shows that SMPF has the ability to sense the airflow velocity.The fibers are arranged in an array row in the wind tunnel flow field, and the fiber array is impacted by the airflow.An experimental system is builtto verify the sensing characteristics of the fibers in the flow field, and a finite element simulation analysis is carried out.The experimental results show that in the wind tunnel device, when there is airflowflowing, a flow boundary layer is generated, the thickness of the boundary layer becomes thicker and thicker along the direction of airflow velocity and the airflow velocity difference on the same cross section is getting larger and larger.The experimental results verify the theoretical model and show that SMPF has the ability to sense the flow field distribution.