A device and method for manufacturing artificial solid bone by metal 3D printing technology comprises: a metal 3D printing technology is used and preferably with Co—Cr alloy and laser sintering to form a solid bone with a specific change in shape and density； a synchronous cutting operation performed on approximately 80% of the preferred surface of the solid bone while the metal 3D printer unit is printing the solid bone, to make the solid bone have the following surface roughness: Ry<；1˜2 μm or less； and a synchronous polishing operation performed on at least one joint surface of the solid bone, to make the joint surface have the following surface roughness: Class A4=Ra0.063 μm or less.
