This paper aims at the climate adaptability of Yulin and Chongzuo during the city developing process . The two cities are inland marginal cities in the Beibu Gulf. The information of climate natural impact factors and social man-made impact factors are used in building the climate carrying capacity evaluation system that consists of one reverse index and one positive index. The reverse index includes natural climate capacity , extreme climate event pressure and urban climate pressure , while the positive index mainly focuses on the coordinated development ability of cities . The climate carrying capacity of the two cities from 2000 to 2021 is quantitatively evaluated . The results show that over the past 22 years , the climate carrying capacity of Yulin has shown a significant upward fluctuating trend , while the overall climate carrying capacity of Chongzuo has been in a stable development trend without obvious changes . This reflects that the two cities still have a lot of room relatively for climate carrying capacity along with the city development process , but abnormal climate and extreme weather events can cause fluctuations in the carrying capacity. The annual average temperature , annual average wind speed and annual sunshine hours have a greater impact on the natural capacity of climate . Drought , low temperature and heavy precipitation are the key factors of extreme climate pressure index. The ownership of civil vehicles and the total industrial output value play an important role in the growth of climate pressure on cities . The proportion of investment in environment protection and the proportion of scientific and technological expenditure play a leading role in the growth of coordinated development capacity of cities . In the future development of cities , it is necessary to strengthen climate adaptability and promote green and low-carbon development simultaneously.