In this paper, the static response of a thermal piezoelectric semiconductor (PSC) beam with flexural deformation is studied with a differential operator method. The analytical solutions of the deflection, electric potential, carrier density, temperature, shear force, bending moment, electric displacement and electric current density are obtained. The effects of temperature on the electromechanical behaviors of n-type ZnO piezoelectric semiconductor cantilever beam are discussed. The numerical results show that the temperature can significantly affect the electromechanical properties of PSC beams. It causes sudden changes of the electric potential, carrier density, electric field, and electric displacement in high temperature regions, while smaller changes of the deflection, shear force and bending moment. These effects are mainly induced by the polarization charges of pyroelectric effect.