Abstract:For a long time, the proportion of clean energy in China is low, and there is relatively little space for the optimization of the existing energy structure. It is urgent to transform the energy structure with the innovation of green and low-carbon technologies. The research and development of green science and technology and the increase of the proportion of clean energy have become the consensus of all regions to complete the mission of "two-carbon". Taking 21 cities in Guangdong Province from 2007 to 2021 as the research object, Tapio and fsQCA methods were used to judge the change of the main influencing factors of carbon emission reduction, identify the authenticity and decoupling of cities and the main driving path. The results show that: (1) the decoupling state of individual cities in Guangdong province is mainly weak decoupling, Cities with strong decoupling and negative decoupling of growth are more dispersed, The decoupling state of each city is relatively optimistic, The time and temporal performance of cities in the Pearl River Delta is relatively unstable; (2) Low-carbon innovation of energy structure is the core driving force to reduce carbon emission intensity, "True decoupling" cities differ greatly in the level of economic development, "Pseudo-decoupling" cities are mainly based on the traditional manufacturing industry; (3) In the configuration analysis, "True decoupling" cities are mainly divided into two categories: "scientific and technological innovation" led by green industrial technology and "clean agriculture" led by green agricultural technology, To solve the problem of path vulnerability in the process of energy structure transformation, Developing new quality productivity and improving the capacity of green technology innovation, green financial support, and green industry development are the endogenous decoupling of cities, An important measure to avoid falling into the "decoupling trap".