The construction of a new development pattern with domestic large circulation as the main body and domestic-international double circulations mutually promoting each other is based on the realistic logic of responding to the counter-globalization trend, the COVID-19 epidemic and the transformation of economic development. To construct a new development pattern of "dual circulation", it is necessary to clarify its core meaning, open up the two ports of supply and demand, couple the three chains of industrial chain, supply chain and innovation chain, recycle the four elements of labor, land, capital and technology, as well as practice the five internal skills of new concepts, new technologies, new economies, new infrastructure and new mechanisms. It’s of great era value to construct a new development pattern of "dual circulation" under the new historical conditions, which will provide new ideas for solving the new dilemma of China’s economic development, point out a new direction for the sustained development of socialist economy with Chinese characteristics, as well as inject new impetus into the world’s new round of economic recovery.