The invention provides a 
mobile phone terminal antenna. The antenna comprises a 
metal casing, as well as a main antenna and an auxiliary antenna which are connected with the 
metal casing through insulating medium, wherein the main antenna is used for receiving and emitting 
wireless signals; the auxiliary antenna, as a diversity antenna, is used for emitting and receiving signals of GPS / WIFI 
frequency band; the main antenna is arranged at the lower end of the 
metal casing and comprises a main 
antenna radiation body, a first feeding part, an 
inductor and a second circuit part, the first feeding part and the 
inductor are positioned at an upper end surface of the connecting part of the main 
antenna radiation body and the metal casing, and the second circuit part is positioned at a lower end surface of the connecting part of the main 
antenna radiation body and the metal casing; a switch is arranged in the second circuit part and controls the second circuit part to be grounded or not so as to realize different working frequencies. According to the antenna, the metal casing and the antenna part are integrally formed through 
injection moulding and other processes. Besides, the switch and the 
inductor are also arranged, the working states of two frequency bands are realized to meet multi-band communication; the 
antenna design can be conveniently adjusted.