The invention discloses a rotationally symmetrical polarized diffraction-free zero-order horse-drop laser light source, including pumping sources, coupled optical system, input mirror, scalar diffractive optical element, a laser gain medium and a vector diffractive optical element, By using a scalar diffractive optical element with Mathieu function distribution as the target light field to confinethe intensity distribution of electromagnetic field in the laser cavity. The diffraction effect of the traditional laser resonator is eliminated effectively, and the mode competition mechanism of thelaser resonator is used to overcome the inability to eliminate the high-order diffraction distribution of the Madouin beam by beam shaping method, and the zero-order Madouin eigenstate laser beam distribution without diffraction is obtained. The rotationally symmetric polarized laser beam distribution is obtained by confining the polarization distribution of the electromagnetic field in the lasercavity with a vector diffractive optical element, so that the rotationally symmetric polarized zero-order non-diffracted hollow laser beam can be obtained.