In flexible ecological revetment engineering,the concrete interlocking block is gradually used due to its easy prefabrication,simple construction,good self-limitation and hydrophilia,as well as its favorable landscape effect,,but it is generally employed only as the 2D pavement structure at present.A kind of 3D ecological interlocking block structure is proposed for the further function on anti-scouring,anti-sliding,plant-protection and compatible use.The functioning mechanism and characteristics are explored.