Under the development of globalization, the importance of NGOs increases gradually. Besides, the members of NGOs get more complicated as well. In addition to traditional sovereign states, more and more NGOs have become major actors in international affairs. This article aims to discuss the trends of globalization as well as the roles of these NGOs actors. Then, it introduces not only the developmental context of ”International Advocacy Networks” but also the issues and interactions among actors by combining the policy of Gender Mainstream. As the numbers and functions of NGOs have been multiplied, we have to analyze the Feminist Movement through the development of ”International Advocacy Networks”. Furthermore, the policy of Gender Mainstream will also be the key issue of this article. As a whole, this article examines the interactional model of Gender Mainstream at the presence of the ”International Advocacy Networks”.