Abstract: As one of the most important urban agglomerations in China, the Beijing-Tianjin-Hebei region is crucial to the coordinated promotion of pollution reduction, carbon reduction and green expansion of the ecological environment in the Beijing-Tianjin-Hebei region under the background of the "double-carbon" goal and the tough battle of pollution prevention and control. Based on the panel data of 13 cities in the Beijing-Tianjin-Hebei region from 2000 to 2020, using the comprehensive index method, the spatial and driving evolution of the synergistic effect of pollution reduction, carbon reduction and green expansion in the Beijing-Tianjin-Hebei region. The results show that the overall development of carbon pollution and green in Beijing-Tianjin-Hebei region shows an upward trend, some cities are developing from the type of alignment and barely coordination to primary coordination and intermediate coordination, and the cities with "HH" and "LL" agglomeration mode begin to appear, and the number is gradually increasing. As time goes by, the sustainable development model of pollution reduction, carbonreduction and green expansion in the Beijing-Tianjin-Hebei region is becoming more and more coordinated.