Climate livability is an important attribute of climate resources and an important embodiment of building a livable city. In view of the fact that urban agglomerations have become an important carrier for China’s New Urbanization strategy，it is of great significance to evaluate the climatic livability of each urban agglomeration and analyze its impact on the population’s willingness to settle. The climatic livability of cities above the local level in China （4 municipalities and 3 counties directed governed by the provincial government） was calculated，and the impact of climatic livability on the population’s willingness to settle was analyzed based on the PSM model. Research shows that climate livability has a significant impact on population migration，and population has higher requirements for climate comfortableness when making settlement choices. The climatic livability of major urban agglomerations in China is roughly at a moderate level in the country，mainly livable in spring and autumn，and few in winter and summer. The latitude is still the most important factor affecting its climatic livability. The construction of a climate-friendly city should be based on creating high-quality space quality，actively respond to climate warming，adopt nature-based solutions，strictly control the boundaries of urban development，and protect various ecological land. It’s also important to connect the urban ecological corridors and create good climate livability for the urban agglomerations.