A metal implant is disclosed, which has a surface forming a plurality of micrometer-order cavities and the micrometer-order cavity forms therein a plurality of sub-micrometer-order recesses, wherein the micrometer-order cavities have a diameter ranging between 1 &mgr；m and 100 &mgr；m, and the sub-micrometer-order recesses have a diameter ranging between 100 nm and 1000 nm. The metal implant has an average surface roughness between 0.1 &mgr；m and 5 &mgr；m.一種金屬植入物，其表面具有複數個微米級凹洞，且微米級凹洞內更具有複數個次微米級凹洞，其中微米級凹洞之孔徑介於1μm~100μm之間，次微米級凹洞之孔徑介於100nm~1000nm之間，且金屬植入物的表面平均粗糙度介於0.1μm~5μm之間。
