The invention provides a bone restoration support and a preparation method thereof. The bone restoration support comprises a support main body prepared from autologous bone powder and autologous bone glue, a nano calcium phosphate coating deposited on the surface of the support main body, and the autologous bone glue covering the surface of the nano calcium phosphate coating and / or filled in pores of the support main body. The support main body has good biological compatibility and bone cell inductive activity, so that a bone defect portion is better restored, the bone restoration support has large specific surface area by virtue of the nano calcium phosphate coating, so that the adhesion, crawling and growth of cells are facilitated; and moreover, due to the existence of the autologous bone glue, at a preliminary period when the bone restoration support is implanted into a human body, a great number of active factors can be released, and osteoclast and osteoblast can be absorbed to induce the formation of new bones. In addition, by adopting a 3D (three dimensional) printing technology, the prepared bone restoration support is highly matched with the bone defect portion of a patient.