The invention provides a wide-angle scanning dual-linearly-polarized phased array antenna, comprising vertically polarized waveguide slot antennas and horizontally polarized micro-strip umbrella-shaped oscillator antennas which are alternately arranged. The waveguide slot antennas radiate vertically polarized electromagnetic waves with the electric field direction perpendicular to the slots to a free space, and the micro-strip umbrella-shaped oscillator antennas radiate horizontally polarized electromagnetic waves with the electric field direction parallel to the oscillators. The two kinds ofpolarized antennas are expanded into arrays in the horizontal and vertical dimensions respectively and do not occupy the space of each other, and thus, the aperture utilization efficiency is improved.Because of small unit distance, large-angle scanning capacity is achieved. The waveguide slot antennas and the array plane of the feed network of the waveguide slot antennas are in the horizontal direction and serve as a metal reflection floor of the micro-strip oscillator antennas. The array plane of the micro-strip oscillator antennas is in the vertical direction, and plays a role in reducing mutual coupling between waveguide slot antenna units.