The feasibility of using polyvinylidene fluoride (PVDF) piezoelectric sensor for the experimental modal analysis instead of accelerometer was demonstrated. A rectangular PVDF film and an accelerometer were attached on the surface of a clamped beam respectively as sensors for measuring the frequency response functions between the external excitation and the responses of the vibrating structure. Modal parameters could be obtained by using the modal analysis software and the results were compared. Experimental results showed that the PVDF sensor had a good effect on experimental modal analysis of the vibrating structure. It had the characteristics of small additional mass, wide frequency response and easy to operate, which was superior to use comparing with accelerometer sensor.