Provided are a conductive substrate which can be produced from inexpensive materials at a lower temperature than those for conventional substrates, and a process for producing the conductive substrate. The conductive substrate comprises a substrate (1) and a conductive pattern (5) provided on the substrate (1), wherein the conductive pattern (5), except on a surface and in a vicinity thereof on a side opposite to the substrate side, entirely has a structure comprising a binder (2) and fine aluminum grains (3) dispersed therein, and on the surface and in the vicinity a surface metal aluminum layer (4) is formed in which the fine aluminum grains (3) are spread with a roller to form a conductive junction connecting the fine aluminum grains to each other.