Based on Guigang second-lane ship lock,we establish a 130 physical scale model to study chamber’s flow conditions and vessel berthing conditions in different energy dissipater layout patterns.The result reveals that,in bottom still 0.9 m high and permeable water stoma 0.4 m high layout pattern,chamber water flow was uniform,we didn’t observe obvious transverse surface slope and partial turbulent,vessel berthing conditions were well,also for future research under the same type of lock head outlet water dynamics of the foundation.