Beijing-Tianjin-Hebei coordinated development strategy has been implemented for ten years, Beijing-Tianjin-Hebei in easing the non-capital functions, “two wings” construction and transportation, ecology, industry and other key areas have achieved important results. Entering a new stage, while recognizing the achievements and boosting confidence, it is also necessary to face up to the problems and take on new responsibilities and new roles. General Secretary Xi Jinping’s proposal of “modernized metropolitan area” is a leap in the understanding of the rules of development of cities and urban agglomerations, which is an important guidance for further deepening the coordinated development of Beijing-Tianjin-Hebei. At present, we should take the construction of modernized capital metropolitan area as a breakthrough, focus on the key, difficult and painful problems in the coordinated development of Beijing-Tianjin-Hebei, carry out explorations, improve the conditions, achieve breakthroughs, and accumulate experiences, so as to effectively promote the strategy of Beijing-Tianjin-Hebei coordinated development in a practical way.