Migration scholarship has undergone a sea change in the last two decades. Most scholars now recognize that many contemporary migrants and their predecessors maintained a variety of ties to their home countries while they became incorporated into the countries where they settled. More and more aspects of social life take place across borders，even as the political and cultural salience of nation-state boundaries remains clear. Transnational studies has emerged，as an interdisciplinary field in itself，scholars from around the world participate in it，attempt to describe and analyze the dynamics of transnational migration and to create new methodological tools. This article summarizes these transnational perspectives and attempts to clarify some aspects of immigrant experience. When we put all the social experience into this seemingly reasonable “melting pot” of national state，immigrant experience in these aspects were masked. Finally，the article shows transnational migration how to change gender relations，this change has been taking place on all levels of social experience. Thereinto，the migration can be understood as a phenomenon taking place in multi-level，multi-site，transnational social field. The authors apply first-hand empirical research from many countries to support their arguments.