Embodiments of the present application disclose an antenna element, an antenna array, and a base station. The antenna element comprises: a metal floor; and a first polarized antenna and a second polarized antenna disposed on an insulating bracket, wherein the insulating bracket is disposed on the metal floor; the first polarized antenna is orthogonal in polarization to the second polarized antenna; the shape of a radiating surface is a graph surrounded by an asteroid, a first oscillating arm and a second oscillating arm are symmetrically disposed; a first feeding end and a second feeding end are differentially fed; the second polarized antenna is composed of a third feeding end, a fourth feeding end, and a second symmetrical oscillator located on the radiating surface; a third oscillating arm and a fourth oscillating arm are symmetrically disposed; the third feeding end and the fourth feeding end are differentially fed.