The present invention discloses a UWB base station and a positioning method therefor. The UWB base station includes four antennae, obverse sides of the four antennae respectively face four azimuth directions, by which 360° may be uniformly divided, on a horizontal section. Azimuth directions faced by the first and the third antenna differ by 180°, and azimuth directions faced by the second and the fourth antenna differ by 180°. The station further includes a single-pole and a double-pole double-throw switch and a UWB module, the UWB module includes a transmitting end, a first and a second receiving end; first receiving end is respectively connected to the second and fourth antenna through single-pole double-throw switch; and transmitting end and second receiving end are respectively connected to the first and third antenna through double-pole double-throw switch. According to the invention, 360° omnidirectional positioning can be achieved, and the positioning precision is high.