Based　on　social　network　and　regression　analyses,　this　study　conducted　research　with　regard　to　the　spatial　correlation　and　effect　of　carbon　emissions　in　urban　agglomerations　of　the　Pearl　River　Delta　(PRD)　with　the　data　of　prefecture-level　cities　in　Pearl　River　Delta　urban　agglomerations　from　2001　to　2019.　As　the　results　suggested,　the　carbon　emission　links　among　cities　in　PRD　urban　agglomerations　were　relatively　loose,　the　subordinate　structure　changed　frequently,　and　the　carbon　emission　exchanges　and　cooperation　among　cities　need　to　be　strengthened.　The　core-periphery　structure　of　the　spatial　correlation　network　of　carbon　emissions　was　loose　to　a　certain　extent,　the　control　ability　of　the　central　city　to　the　overall　network　structure　was　weakened,　and　the　marginal　cities　gradually　changed　from　being　controlled　to　adopting　a　controlling　role.　The　improvement　in　the　overall　network　tightness　and　stability　and　the　breaking　of　the　network　hierarchical　structure　significantly　reduced　regional　carbon　emissions,　whereas　the　improvement　in　individual　network　centrality　significantly　promoted　urban　carbon　emission　reduction.　The　above　analysis　will　help　to　provide　reference　for　coordinating　carbon　dioxide　emission　reduction　and　low-carbon　city　development　policies.　©　2022　Science　Press.　All　rights　reserved.