A bone implant composite comprising a collagen matrix and a calcium-basedmineral, the calcium-based mineralhaving a particle size of 25-2000 m and being interspersed in the collagenmatrix； wherein the bone implant composite contains3-60% by weight the collagen matrix and 40-97% by weight the calcium-basedmineral, and has a pore size of 50-500 µm, aden-sity range of 0.02-0.8 g/cm3, a tensile strength range of 0.4-100 kg/cm2,and a compression modulus range of 0.2-10 kg/cm2. Alsodisclosed are methods of preparing the above-described composite.
