Multiple-input multiple-output antenna structure and mobile terminal

The invention relates to a multiple-input multiple-output antenna structure. A first feed port is connected with a metal frame in a coupling way via a microstrip transmission line, and a second feed port is connected with two free ends behind the opening of the metal frame, i.e. the first feed port adopts coupling feeding and the second feed port adopts direct feeding. The size of an electronic device is reduced by adopting a multiple-input multiple-output mode. Meanwhile, high isolation of double ports can be realized by adopting the two feed ports of the first feed port and the second feed port so that radiation efficiency and multiple-input multiple-output transmission performance of the antenna can be enhanced. Besides, the invention also provides a mobile terminal.