The semicircular canal is an angular displacement sensing organ in human vestibular system. In this paper, based on the geometric size, mechanical properties and internal structure of human semicircular canal, a bionic angular acceleration sensor with similar structure size and working mechanism as human semicircular canal is designed and fabricated by using the sensor with symmetrical electrode metal-core PVDF fiber (SMPF). At the same time, an experimental system is built to verify the sensing theoretical model of bionic semicircular canal sensor. The experimental results show that the working mechanism of the sensor is basically consistent with the derivation results of the mathematical model. The bionic sensor outputs electrical signals with corresponding amplitudes under different acceleration stimuli. Through the frequency sweep experiment, it is confirmed that the natural frequency of the system is about 10 Hz, which can be used for the motion detection of human head.