To provide a method for coating a substrate by a wet-on-wet coating system wherein the intermingling of the coating film on the lower side and that on the upper side can be reduced without markedly changing coating conditions and to provide a substrate coated thereby.

A substrate is coated with a plurality of coating films by a wet-on-wet coating system. The lower layer is first formed from a coating material containing polyethylene wax, and a recoating film is formed on the lower wet film, and the lower wet film and the recoated wet film are simultaneously baked. The lower wet film is at least one except the uppermost layer in double coating films such as (1) a double coating film prepared by forming a topcoating solid coating film on an intermediate coating film and (2) a double coating film prepared by forming an intermediate coating film on a chipping primer and forming a topcoating solid coating film on the intermediate coating film. A coated substrate is obtained by coating a substrate by this method.