A zoom lamp includes a lamp body, a light emitting component, a movable ring, a lens, and a rotation ring. The lamp body defines a receiving groove. The movable ring includes a plurality of guiding posts protruding from an outer wall thereof and a plurality of resilient members. The lens is fixed to the movable ring. An external wall of the rotation ring is provided with a latching hook, the rotation ring defines a plurality of inclined grooves. When the rotating ring rotates, the guiding post is guided by the inclined groove to slide, thereby driving the lens to move adjacent to or away from the light emitting component.