An antenna module for a terminal includes an antenna and a Radiated Spurious Emission (RSE) improvement component. The antenna includes a feed source, a ground point, and at least one radiation arm. The RSE improvement component is coupled to the antenna for suppressing high order harmonics generated by the antenna when the antenna operates in a target frequency band, and includes a radio frequency switch having a terminal connected to the at least one target radiation arm, and another terminal connected to the ground point; or, the radio frequency switch is connected in series into the at least one target radiation arm of the antenna. The at least one target radiation arm is a radiation arm by which the antenna radiates the high order harmonics outward.