The embodiment of the invention relates to a wideband dual polarization directional radiation unit and an antenna. The wideband dual polarization directional radiation unit is mounted on a reflection plate to form the antenna and comprises a strut member, radiating bodies, a feed cable and at least one of three impedance bandwidth increasing structures including a hollow-out structure arranged on each radiating body, a loading section arranged on the lower surface of each radiating body and a structure that the corresponding electrical connected parts of the feed cable and the radiating bodies are respectively lower than the upper surface of the radiating bodies, wherein each hollow-out structure comprises a first hollow-out polygon positioned in the middle of the radiating body and two second hollow-out polygons which are symmetrically positioned on two sides of the first hollow-out polygon. The wideband dual polarization directional radiation unit is integrally designed, has simple structure and favorable consistency and is convenient for mounting and easy for production. In addition, the wideband dual polarization directional radiation unit has the characteristics of greater impedance bandwidth, high isolation, high grain and high cross polarization.