Regional integration is an important economic form to promote rapid economic development and transform the development mode of countries and regions. The concept of international regional integration is expounded and the role and problems of regional integration in promoting national and regional economic development are analyzed from the perspective of new economic geography. At the same time, the relationship between regional integration and economic globalization is discussed.egional integration is an important bridge for the development of economic globalization and is of great significance for promoting the transformation of global economic pattern, economic globalization and trade liberalization. Finally, suggestions on China's economic development in the form of regional integration development are put forward , the opportunities and challenges faced in the process of economic development are analyzed and China's future economic development is looked forward.