An implant material is provided with a substrate (10), and a carbon material film (20) formed on the surface of the substrate (10). The surface of the carbon material film (20) comprises carbon atoms, oxygen atoms, and nitrogen atoms. The carbon atoms bond with the oxygen atoms to form carbon-oxygen single bonds and carboxyl carbon. The content percentage of nitrogen atoms on the surface of the carbon material film (20) is at least 8.0 atom %; the content percentage of carbon-oxygen single bonds is at least 5.4%; and the content percentage of carboxyl carbon is not more than 3.1%.