Carbon dioxide emissions, leading to global warming, have threatened human development. It is urgent to control and slow down greenhouse gas emissions to maintain ecologically sustainable development. The energy demand and pollutant emissions generated in the process of urban development are the main reasons leading to climate and environmental change. Scientific planning for cities and construction of low-carbon urban development models are the first work to deal with climate and environmental issues. In view of these problems, the article takes Guangyuan City as an example of low-carbon city construction, through transforming the city's industrial structure, strengthening the energy and science and technology innovation, establishing and improving the low-carbon system and other methods to implement the specific construction of low-carbon city, to build a clean, low- carbon new urban life mode, Make Guangyuan City from 2015 to reach the exploitable hydropower installed capacity of 65% to 80% in 2020. In this paper, we propose a series of specific low- carbon urban spatial layout and planning strategies, which not only in-depth analysis of the key problems in China's urbanization process, such as energy consumption, carbon emissions, etc., but also propose targeted solutions. By implementing these strategies, we can effectively meet the challenges brought about by urbanization and promote the development of Chinese cities in a more low-carbon and sustainable direction.