The institutional barriers to the coordinated development of education in Beijing，Tianjin and Hebei are the obstacles to the coordinated development of education in the three regions. Based on the definition of education synergistic development system and mechanism，and drawing on the perspective of regional lifelong education system，this paper proposes that the construction of educational system and mechanism in Beijing，Tianjin and Hebei should follow the basic ideas of giving full play to the dividends of institutional reform，strengthening the support of government system and realizing the inclusiveness of synergistic system. The three-dimensional framework of the Regional Lifelong Education Synergy System is constructed，which includes vertical hierarchy dimension，spatial extension dimension and life cycle dimension. After analyzing the current situation and problems of the three dimensions of the Beijing-Tianjin-Hebei education synergy development system and mechanism，it is suggested that up-down accessible leadership system，decision-making and investment mechanism should be established，and improving cross-sectoral resource integration mechanism so as to ensure the priority development of education，and exploring the integration development mechanism of career education and lifelong education.