The invention provides a shape memory spacer fabric composite, being a spacer fabric coated with a shape memory polymer layer, wherein the spacer fabric comprises a first outer layer, a second outer layer and an intermediate spacing layer connecting the first outer layer and the second outer layer; the shape memory polymer layer is made from at least one block or random copolymer selected from the group consisting of the following: polyesters, polyurethanes, polyamides, polyols; the copolymer has at least one phase transition temperature in a range of 40˜80° C.