At the condition of high numerical aperture, optical intensity distribution near the focus must be analyzed by vector diffraction theory. According to vector diffraction method, three-zone annular phase pupil filters are simulated to realize beam shaping. Through the numerical simulation of objective focus area light intensity distribution with 0.85 numerical aperture, three-zone annular phase structure can be realized by using optimal search algorithm. The results indicate that flat-top beam shaping and single-circle beam shaping at the focal plane can all be realized by using three-zone annular phase pupil filters. The influence of normalized radius and changing phase on beam shaping quality is analyzed. Further more, changing the radii of three rings can control the radius of diffraction single-circle and the strength of focus intensity.