As the most famous international organizations aggregating city，Brussels’ city reconstruction had started early in the 19^th century. Under the delicate design of state elites and city managers，Brussels had been chosen as the location of main institutions of EU because of the city’s superior natural and nurture conditions，this brought important opportunity for the zooming of city’s internationalization along with its international impacts. Relying on the perfection of infrastructure service and highly professional management system，Brussels keeps improving its service and management which offer to international organizations，matching its title of “Capital of Europe”. The successful practice of attracting international organizations to locate in Brussels have several enlightenments to Beijing：focusing on the influential international organizations，attract them to locate，forming professional system to manage and service international organizations，building concentrated areas of international organizations in order to fully stimulate the aggregation effects of international organizations.