This era today is sometimes called “Anthropocene” during which human gain the dominance ina complex environment on the earth. In order to solve global problems，global governance，especially the global climate governance featured urgency，diversity and flexibility needs the multi-level governance，with the integration and coordination networks of supranational institutions，sovereign states and subnational actors. As the internationalization of local affairs made by globalization，the initiative towards international arena of cities is increasing. Enhancing the influence on various actors and promoting the status in multi-level governance system are the games that never end. Some cities have formed networks to share knowledge and governance models in an effort to exert greater influence upon the process of global climate governance，with global cities in particular playing an important role in driving the global agenda forward and into practice. New York，as a typical global city and one of the global leaders in the fight against climate change，has four main approaches to build its influence：keep excellent governance condition；own advanced governance model；promote climate policy formulation at the national level from the bottom up；guide city networks to influence supranational agenda selection and relevant policy formulation.