An antenna module includes a first, a second, a third radiators, and a ground radiator. The first radiator includes a first section and a second section. The second radiator is connected to the first radiator, and includes a third section and a fourth section connected to each other. The fourth section includes a feed end. The third radiator is connected to the third section of the second radiator. The ground radiator is connected to the third radiator. The first, the second, the third, and the ground radiator are sequentially connected in a bent manner to form a stepped shape. The first section of the first radiator and the fourth section of the second radiator jointly resonate at a low frequency band, and the second section of the first radiator, the second radiator, the third radiator, and the ground radiator jointly resonate at a high frequency band.