The present invention discloses an adsorption agent for noble metal, a method for manufacturing the same, and a method for recovering noble metal, and particularly discloses a noble metal adsorption agent, which includes algae or residue of algae having an amino group as a functional group. A noble metal is retrieved by a method including: adsorbing the noble metal on the noble metal adsorption agent; and retrieving the noble metal. The noble metal is solved in a liquid. Thus, by using the noble metal adsorption agent, the noble metal is selectively retrieved.