Promoting the construction of a "double cycle" new development pattern is a natural move for China to participate in international cooperation and win new competitive advantages, and it is also a strategic choice to seize the initiative of future development. To analyze the connotation of the new development pattern and the inevitability and possibility of its construction, to conduct a theoretical review of the construction of the new development pattern, and to deeply explore the constraints of the new development pattern and the promotion path are also the inevitable requirements of promoting the construction of the new development pattern. This book explores in depth how to promote high-quality economic development in various regions by constructing a new development pattern of "double cycle" in the context of China's economic development entering a new stage.