Abstract: The present disclosure discloses a light hanging mechanism and a display rack having the same. The light hanging mechanism is configured to mount the light on a mounting structure. The light hanging mechanism includes: a casing, defining a receiving cavity therein and provided with a mounting hole; a first adjusting shaft, with one end movably inserting into the receiving cavity through the mounting hole; a positioning portion, movably arranged on the first adjusting shaft and located in the receiving cavity between a locked state and an unlocked state; a mounting base, capable of being connected to the lights and provided with a cooperating portion; and a mounting portion, with at least a portion connected to the casing and at least another portion connected to the mounting structure.