The invention relates to a method for enabling an express envelope to serve as an advertisement carrier. The express envelope serving as the advertisement carrier is formed by an express envelope body and advertisement materials, the well manufactured advertisement materials are placed in the express envelope or a transparent plastic bag which is positioned on the back surface of the express envelope and used for placing an express waybill. The advertisement materials can be cards, direct mail (DM) sheets, coupons, illustrated books and pictures. The express envelope and the advertisement materials form a whole, advertising information is spread to express envelope users along with use of the express envelope by means of services of express enterprises, and a function of the express envelope serving as the advertisement carrier is achieved. The express envelope users are mainly business people and office workers, and accordingly the express envelope serving as the advertisement carrier can spread the advertising information to the business people and the office workers. Advertisement putting range and quantity can be flexibly determined according to the using range and quantity of the express envelopes.