A method for processing a mobile advertisement, a proxy server, and a terminal are provided. The method includes: receiving, by a proxy server, an advertisement request sent by a proxy software development kit (SDK) embedded into an application, where the advertisement request information carries an identifier of the application; obtaining identifiers of corresponding advertisement networks and traffic allocation of the advertisement networks according to the identifier of the application; selecting an identifier of an advertisement network according to the traffic allocation, and sending an advertisement information request to the corresponding advertisement network according to the selected identifier of the advertisement network; and receiving advertisement information returned by the corresponding advertisement network according to the advertisement information request, and sending the advertisement information to the proxy SDK, so that the proxy SDK displays the advertisement information in an advertisement position of the application.