The construction of the Beijing-Tianjin-Hebei urban agglomeration is a major national strategy and an important measure to promote China’s economic development，especially to the development level of the Northern region. In the implementation process，coordinated development and green transformation are facilitated relationships，the green transformation is one of the goals of coordinated development，and coordinated development is a strong guarantee for realizing green transformation. This report discussed the special necessity of realizing green transformation in the Beijing-Tianjin-Hebei urban agglomeration，and summarized the results of the coordinated development and green transformation of Beijing-Tianjin-Hebei urban agglomeration and pointed out the problems and challenges of this model，and put forward the countermeasures to realize green transformation in the collaboratire development.