Abstract: Molecular dynamics simulation method is used to explore the flow characteristics of nanoconfined water under dynamic load. The simulation results show that layers phenomenon was observed and the viscosity increased with the increasing load on the nanoconfined water. As the viscosity is higher than a critical value, the mix by laminar and turbulent state of the confined water would convert to a single state of laminar flow under the effect of layer structure and higher viscosity. Meanwhile, with the tangential motion of wall, the confined water appeared boundary slip phenomenon. And with the increase of load, slip became even more significant. In a single state of laminar flow, the velocity of wall had no significant influence on the slip length of confined water.