Conch reef capable of providing better flow field effect

The invention relates to a conch reef capable of providing a better flow field effect. The conch reef comprises a hollow cuboid framework, wherein a flow guide hole penetrating through the front end surface and the back end surface is formed in the cuboid framework, and conches are filled in a space surrounded by the outer periphery of the flow guide hole and the cuboid framework, so the upper end surface of the cuboid framework is covered by the conches. The flow guide hole penetrating through the front side and the back side is favorable for smooth penetration of sea water through a reef body during tide rising and tide falling, the water passing performance of the reef body is improved, meanwhile, strong rising flow can be generated when the conch reef is placed into the sea, and in addition, the conch reef can generate a back eddy current region with a greater span in the sea, so the smooth effect generated by the reef body can be enhanced. After the conch reef placing, the lower end surface is sunk to the seafloor, is blocked and separated by the seafloor sediments and is water-impermeable, so the upper end surface of the cuboid framework does not need to be provided with water passing holes, the conches can be directly and fully filled, the structure of the reef body is simple, and the construction is easy. The conch reef can be applied to aquaculture.