Abstract: Skipping stone is a common solid water bounce movement. Studying its take-off and reentry movement near the water surface has a strong reference significance for the development of the aircraft's high maneuverability penetration ability in the offshore surface. Based on the CFD numerical simulation method,taking the SST <i<k-ω</i< model as the turbulence model,using the overlapping grid technology to couple the N~S equation and the six-degree-of-freedom ballistic equation,a numerical simulation was carried out for the skipping stone of a thin disk in three-dimensional space. The characteristics and movement laws of skipping stone under different working conditions were studied. The results show that the time between the disc contacting the water surface and leaving the water surface calculated by the numerical simulation is in good agreement with the experimental value,and the disc's motion trajectory is consistent with the experimental results. Due to the disc moving forward and also rotating at the same time,a Magnus effect takes place,causing a lateral offset in the trajectory of the disc and a lateral deflection of the posture of the disc itself.