Abstract: The present invention relates to a water-purifying lid having a self-powered UV LED and a filter coupled thereto, the lid comprising: a first body having a box shape and open at one end thereof; a support plate installed in an inner space of the first body to form a space; a rotational part; a coil part; a handle coupled to one end of a rotational shaft at one end thereof so as to rotate the rotational shaft when a force is applied thereto; an ultraviolet sterilization device; a second body; a filter for removing impurities; and a discharge part comprising a valve, wherein a user rotates the rotational shaft and a rotational plate by using the handle, a magnet moves above the coil part with the rotation of the rotational plate to generate electricity at the coil part, and the electricity having been generated at the coil part is transferred to a UV LED of the sterilization device, thereby emitting an ultraviolet ray which sterilizes water in the second body.