Square combined artificial fish reef

A square combined artificial fish reef comprises a square combined artificial fish reef body and is characterized in that the square combined artificial fish reef body is composed of a bottom unit, an intermediate wicker unit, an intermediate unit and a top unit. The bottom unit, the intermediate wicker unit, the intermediate unit and the top unit are overlaid and welded to form the square combined artificial fish reef. The square combined artificial fish reef is a large square frame reef, is provided with foundations, has a concise structure, is convenient to process and manufacture, and hasthe characteristics that the stability and hydrodynamics of the artificial fish reef are improved. The square combined artificial fish reef can be used as a large independent reef or a group reef, and provide spawning locations for fishes such as cuttlefishes.