Zoom lens

The utility model discloses a zoom lens, the zoom lens sequentially comprises a first lens group, a second lens group, a third lens group, a fourth lens group and a fifth lens group from an object side to an image side along an optical axis, the first lens group is a fixed group with positive focal power; the second lens group is a zoom group with negative focal power; the third lens group is a fixed group with positive focal power and comprises an eighth lens and a ninth lens which are sequentially arranged from the object side to the image side along the optical axis; the fourth lens group is a focusing group with positive focal power; the fifth lens group is a fixed group with positive focal power and comprises a thirteenth lens and a fourteenth lens which are sequentially arranged from the object side to the image side along the optical axis; and the curvature radiuses R24 and R25 of the object side surface and the image side surface of the fourteenth lens meet the condition that (R24 + R25)/(R24-R25) is