A thermal development apparatus for thermally developing a thermal developable recording material in a thermal development section, the thermal developable recording material having a latent image formed in advance, wherein the thermal development section has: a heating member made of a porous body having a gas permeability, the heating member having a heating surface that is disposed so as to face a surface of the thermal developable recording material; and an air feed unit for feeding heated air to the thermal developable recording material through the heating member.