Shirin Mohammadialiabadi1,Fatemeh Goharpey*2,Jafar Khademzadehyeganeh3 1,2Department of polymer and color technology engineering, Amirkabir University of technology,Tehran,Iran. 3Department of Engineering,Qom university of technology,Qom,Iran. 1Edu_mohamadi@yahoo.com *goharpey@aut.ac.ir The growing and increasing expansion of the role of electrical energy in the country's economic development is undeniable so that recognizing and understanding the different types of energy sources and trying to improve their efficiency has always been the main goal. In this regard, the production and use of piezoelectric systems that generate electrical energy from mechanical motion is necessary due to lack of pollution and lower costs. Researchers have shown that enhancing piezoelectric systems and increasing their efficiency by using nanotechnology has had successful results. In this study, the piezoelectric polymer nanocomposites were studied and the nanoscale effect was evaluated on the improvement of piezoelectric behavior of systems based on polyvinylidene fluoride. Studies have shown that the presence of nanoparticles in addition to improving piezoelectric properties helps to enhance other required properties, including mechanical behavior, thermal stability, and strength and strength. Different geometric shapes of nanoparticles by playing a nucleating role for crystallinity through the high interface between the matrix and nanoparticles, enhances beta crystals and eliminates the stable and complementary alpha crystals from the system, which results in an increase in the amount of beta polar crystals and an increase in the bipolar total moments in system. And enhance the piezoelectric behavior of the system. Also, the study of the effect of nanoscale shape on the improvement of piezoelectric behavior of polyvinylidene fluoride showed that nano particles wi