Net cage mooring anchor leg with power buffering function

The invention discloses a net cage mooring anchor leg with a power buffering function. The net cage mooring anchor leg comprises a seabed anchor chain used for being connected with an anchor, an underwater anchor chain, one or more floaters, a floating body and a mooring rope used for being connected with a net cage, wherein the seabed anchor chain is arranged on a seabed; the floating body and the mooring rope float on the sea surface; the lower end of the underwater anchor chain is connected with the seabed anchor chain; the upper end of the underwater anchor chain is connected with the floating body; the mooring rope is connected with the upper end of the underwater anchor chain; the floaters are connected to the underwater anchor chain at intervals, so that the anchor chain sections, located between every two adjacent floaters, between the floater at the uppermost part and the floating body as well as between the floater at the lowermost part and the seabed anchor chain, of the underwater anchor chain are in a catenary shape. The multiple anchor chain sections in the catenary shape play a power buffering role on the floating body, so that displacement of the net cage is limited, the occupied area of a net cage culture sea area is greatly saved, stability of a net cage system is improved, stress on the net cage is reduced, and safety of a net cage floating pipe framework is improved.