In view of the landform and geological conditions of Lijiazhou beach，according to the flat terrain and slow flow velocity of the beach surface，the surface layer is soft plastic，local flow plastic muddy silty clay，which has high water content，high void ratio，low permeability，high sensitivity，low strength，high compressibility，rheology and other engineering properties.For onshore beach surface protection，3D stiffened mesh cushion with good permeability，which can promote sediment deposition，facilitate vegetation growth，improve the ecological environment of beach surface，and have good environmental protection，shall be selected.It greatly reduces the earthwork excavation on the beach surface，which is conducive to water and soil conservation，has little impact on the natural ecology and water flow environment，has the ecological restoration function，and the overall ecological effect is good.The current pattern of shoal and channel has been stabilized to prevent the channel conditions from developing in an unfavorable direction.