Abstract: A locking structure and a buckling washer are provided. The locking structure is provided for locking an object having a thru-hole. The locking structure includes a stud sleeve, a buckling washer, and a screw. The buckling washer is disposed on the stud sleeve, and the buckling washer includes a carrying portion and a plurality of hook portions. The carrying portion has a penetrating hole, and the hook portions extend from the carrying portion and are arranged outside of the penetrating hole. The carrying portion of the buckling washer is configured to carry the object, and the hook portions are configured to retain the object. The screw is configured to be screwed in the stud sleeve by passing through the thru-hole of the object and the penetrating hole of the buckling washer, such that the object is locked by the hook portions.