In order to expand the clustering function of artificial reefs and realize the new mode of modern marine pastures for cage and raft multi-level aquaculture, a certain form of artificial reef community is constructed near the cage, and CFD software is used for secondary development to simulate the reciprocating tide and analyze the flow field in the reef area. The results show that when some reefs are placed near the cage, at the underwater velocity of 1 m/s, the velocity in the cage in the reef area and in the fenced breeding area is 0.60- 0.80 m/s; and a large eddy current area is formed behind the reef area, with the velocity of 0.2-0.67 m/s. According to the feeding conditions of large cages and fences, the carrying capacity of reciprocating currents in the reef area to aquaculture solids is analyzed. The feasibility of the new comprehensive layout model of artificial reef community, cage and aquaculture raft is verified. The research indicates that the artificial reef community has a certain blocking effect on the cages placed inside, and on the back of the reef community, it is suitable for the raft aquaculture of shellfish and algae, which provides a theoretical basis for the ecological environment construction of modern marine pastures.