A communications terminal includes a multiple-input multiple-output antenna system. The multiple-input multiple-output antenna system includes a first antenna module, a second antenna module, and a first ground structure. The first antenna module includes a first radiator configured to form a first MIMO antenna and a second radiator configured to form a GPS antenna, and a first slit is provided between the first radiator and the second radiator. The second antenna module includes a third radiator configured to form a low frequency antenna and a fourth radiator configured to form a second MIMO antenna. The second radiator is connected to the third radiator. One end of the first ground structure is connected to the second radiator or the third radiator, and another end is connected to a ground plane of the communications terminal.