Telephoto lens, camera module and electronic equipment

A telephoto lens (1), a camera module (10) and an electronic device (100). And when the telephoto lens (1) is focused at a distant view, the field angle FOV of the telephoto lens (1) is less than 60 degrees. The telephoto lens (1) includes a first lens group (G1) and a second lens group (G2) arranged from an object side to an image side, the first lens group (G1) having a positive refractive power, the second lens group (G2) having a negative refractive power, and a distance between the first lens group (G1) and the second lens group (G2) varies during a focusing process in which the telephoto lens (1) is switched between a distant view and a close view. The telephoto lens (1) not only can realize long-range shooting and high imaging quality, but also can have relatively strong close-range shooting capability, so that wide object distance imaging from long-range shooting to close-range shooting is realized.