The utility model discloses an anti-subsidence triangular mesh shell artificial reef which comprises a triangular permeable reef body. A plurality of stand columns are arranged under the triangular permeable reef body, a nylon net is wrapped on the outer surface of the triangular permeable reef body, and the space wrapped by the nylon net is filled with shells. Through combination between the triangular permeable reef body and the nylon net, the anti-subsidence triangular mesh shell artificial reef is simple in structure and less in economic input and saves materials; the stand columns can prevent the reef body from shifting, sinking and the like, so that stability is improved; square holes of the nylon net in the middle of the top plane of the reef body bring convenience to sampling tests of attaching organisms at the later stage; the shells are filled in the triangular permeable reef body, the ecological attachment area is greatly increased, and environmental pollution caused by accumulation of the excessive shells is avoided; reinforced concrete and nylon ropes are utilized and can improve the corrosion resistance of the marine attaching organisms to the artificial reef.