Terminal antenna based on metal rear shell and terminal

The invention discloses a terminal antenna based on a metal rear shell and a terminal. The terminal antenna comprises a metal rear shell, a conducting medium, a grounding element, a feed matching network and a feed point, wherein a gap is formed in one end of the metal rear shell, and the gap is used for partitioning the metal rear shell into a bottom metal frame and a back metal plate, wherein the bottom metal frame serves as an antenna radiating unit, and the back metal plate serves as ground; the conducting medium is arranged on the side edge or top of the metal frame of the metal rear shell; at least one point on the conducting medium is coupled or short-circuited with the bottom metal frame; the grounding element is connected with the back metal plate; and the feed matching network is fed in the antenna radiating unit through the feed point. According to the terminal antenna based on the metal rear shell and the terminal, the gap is extremely close to the bottom end of the metal frame, so that a common three-section type design is extremely approximate to a full-metal integrated design, and the conducting medium is arranged on the side edge or top of the metal frame of the metal rear shell so as to extend a covering frequency band of the antenna, so that the frequency band range of the antenna is larger.