Method for producing piezoelectric polymer

The present invention provides a method for producing a piezoelectric polymer, the method being characterized by the following: a three-dimensional shaping device is used to shape a shaping material comprising a piezoelectric polymer into a structure having a piezoelectric site; the temperature of a nozzle for discharging the shaping material in the three-dimensional shaping device is not less than the crystallization temperature but less than the melting point of the piezoelectric polymer; the moving speed of the nozzle of the three-dimensional shaping device is greater than the discharge speed of the shaping material comprising the piezoelectric polymer; and the draw ratio of at least a part of the layered piezoelectric polymer is 1.5 times or more. According to the present invention, the piezoelectric polymer can be shaped into a desired shape by using the three-dimensional shaping device, and also the resulting structure can be endowed with piezoelectricity.