A bone implant to be disposed between a first bone section and a second bone section is disclosed. The bone implant includes a body structure, a plurality of through-hole structures and an extended channel structure. The body structure has a first end surface to be connected to the first bone section and a second end surface to be connected to the second bone section. The plurality of through-hole structures are disposed in the body structure, pass through the first end surface and the second end surface and have a through-hole axis. The extended channel structure is disposed in the body structure, wherein the extended channel structure enables a new bone section to grow along a direction other than the through-hole axis between the first bone section and the second bone section.