Abstract: Ship waves in canals can threaten bank stability and nearshore aquatic habitats.A porous ecological revetment structure proposed for the Pinglu Canal was investigated to quantify ship-wave propagation and hydrodynamic responses inside the revetment cavity.A three-dimensional hydrodynamic model with prescribed ship motion was established to simulate nearshore ship-wave transformation and local velocity,turbulent kinetic energy,and near-bed shear stress in the cavity.The simulated ship waves were divided into three stages:bow solitary wave,main wave,and trailing wave.The revetment attenuated external disturbances and maintained a low-disturbance cavity environment.Near-bed velocity decreased from the side openings to the cavity center and then to the solid boundaries.Local velocity reached about 0.30m/s during the main-wave stage because of fluid exchange through the side openings.Turbulent kinetic energy peaked at 1.5×10^-3m²/s² in the cavity center,and near-bed shear stress reached about 0.10Pa,below the threshold for fine-sand incipient motion.The porous structure creates a heterogeneous micro-hydrodynamic environment:exchange zones support material transport,while low-disturbance zones provide stable near-bed habitat.The results clarify the local hydrodynamic mechanism and potential ecological effects of porous ecological revetments under canal ship waves,and support revetment optimization and nearshore ecological protection.