PURPOSE: An air exhaust device of a metal mold for a shoe brush is provided which exhausts a foam generated in a molding process through multiple air exhaust holes in an air exhaust pipe so that it contributes to a cooling stability of the molded product to minimize an inferior rate in a product. CONSTITUTION: An air exhaust device of a metal mold for a shoe brush is consisted of the following components of: not less than one air exhaust pipes(5) which are installed to penetrate into a product molding part(6) which is formed in the metal mold(1); a pin which is fixed for several air exhaust holes to be in the air exhaust pipe; and a product molding part wherein the air exhaust pipe is entered.
