Provided is a biological implant which exhibits high binding ability to a biological tissue after having been embedded in a living organism, which secures an appropriate strength depending on a site to which the implant is applied, and in which a micropore structural portion is less likely to be removed from a macropore structural portion. The biological implant includes a macropore structural portion which defines macropores of the biological implant, and a micropore structural portion which has micropores therein, the micropores having a pore size smaller than that of the macropores, the biological implant being characterized in that the macropore structural portion has substantially no pores therein the micropore structural portion is provided on the surface of the macropore structural portion the macropore structural portion and the micropore structural portion are formed of the same engineering plastic material and the macropore structural portion is formed of a single material.
