Abstract: In order to extend the application area of piezoelectric composites, 0-3 type polyvinylidene fluoride (PVDF)/Pb(Zn_1/3Nb_2/3)_0.05Zr_0.47Ti_0.48O₃ (PZNZT) piezoelectric composites were prepared using solid reaction process firstly. Then, the effects of PVDF content on the phase, microstructures and properties of PVDF/PZNZT composites were investigated. The results show that the average particle size of PZNZT ceramic powders after mixing with PVDF powders is close to that of pure PVDF powders. After sintering under 220℃, the diffraction peaks of PZNZT perovskite structure present in the XRD patterns of PVDF/PZNZT composites mainly. When PVDF content is lower, the combinations between PZNZT ceramic grains are relatively loose; with PVDF content increasing, the ceramic grains are almost surrounded by PVDF phase. The PVDF/PZNZT composites with different PVDF contents present different series and parallel circuits in polarization electric field for the different microstructures. After polarization, the electric-properties of 5wt% PVDF/PZNZT composite are the best, the dielectric constant is 116, dielectric loss tan δ is 0.04, piezoelectric constant is 48 pC/N and electromechanical coupling coefficient is 0.28. With PVDF content increasing, the Curie temperature of PVDF/PZNZT composite decreases, and the Vickers hardness increases, but still smaller than the hardness of pure PZNZT piezoelectric ceramic. The conclusions obtained show that the properties of PVDF/PZNZT piezoelectric composites can meet the requirements of underwater acoustic, electroacoustic and ultrasonic transducers et al.