Embodiments of this application relate to the field of antenna technologies, and provide an antenna and an antenna processing method, to reduce structural complexity and assembly difficulty of an antenna, thereby ensuring performance of the antenna. The antenna includes a feeding base plate and a plurality of radiation apparatuses disposed on the feeding base plate, where the feeding base plate is configured to feed power to the plurality of radiation apparatuses; and each of the plurality of radiation apparatuses includes a first insulating base and a first metal conducting layer attached to the first insulating base, the feeding base plate includes a plate-shaped second insulating base and a second metal conducting layer attached to the second insulating base, and first insulating bases and the second insulating base are integrated together. The antenna provided in the embodiments of this application may be used for a multiple-input multiple-output communications system.