A combined diving utensil has a buckling assembly, a seesaw and a fastening element. The buckling assembly includes a male buckle and a female buckle. Of which, one end of the female buckle is provided with an opening, and the other end provided with a mating joint. One end of the male buckle is provided with a threading portion, and the other end provided with an extension coupled with the mating joint. A plurality of ribs are set on one surface of the fastening element, which is set on the threading portion of the male buckle. A stopper is set close to the end of the fastening element. The seesaw is provided with a thrust rib plate, which is mated with a plurality of ribs on the fastening element and pivoted on the female buckle via the fulcrum.