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The technology for creation of the polymer-microsized piezoelectric composite substrate is developed by employing the electric gas discharge plasma method. It is determined experimentally that as a result of the nano-structurization of the volume of the polymer-piezoceramic composite close to the surface it is Young and piezomodulus as well as the mechanical quality and electromechanical coupling coefficients and the dielectric constant has been increased, whereas, tangent losses are decreased depending on the type of the nanoparticle and its volume rate.