An antenna structure includes a metallic member. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap. The front frame between the first gap and the second gap forms a first radiating section, the front frame between the first gap and an end of the slot forms a third radiating section. Current enters the first radiating section from the first feed portion, the current flows through the first radiating section and towards the first gap and the second gap, respectively, thus activating radiating signals in a first frequency band and a second frequency band, the third radiating section obtains current from the first radiating section by coupling, thus activating radiation signals in a fourth different frequency band. A wireless communication device using the antenna structure is provided.