Submerged water intake can effectively prevent surface floating debris from blocking the nuclear power water intake system, and is considered as one of the effective ways to actively guide and avoid blockages in nuclear power plant water intake. This study used ICEM software to establish a geometric model of a multi-point mushroom head stealth system, and conducted numerical simulations using FLUENT software. Based on Navier Stokes equations and k-epsilon turbulence model, the influence of different mushroom head deployment schemes on the flow field of surrounding water bodies is studied. The results indicate that the multi-point mushroom head water intake method has a relatively small impact range, the flow field has symmetry, and the inflow characteristics are stable. The roll up effect of the mushroom head water intake system is mainly concentrated in the lower layer of the inlet window, and a smaller spacing may increase the risk of roll up and affect the uniformity of water intake. The research provides technical reference for the optimization design of water intake systems in nuclear power plants.