In　the　historical　confluence　of　the　＇＇Dual　Carbon＇＇　goal　and　the　development　strategy　of　the　Yangtze　River　Economic　Belt　(YEB),　leveraging　policy　effects　is　crucial　for　synergistically　promoting　pollution　control,　carbon　reduction,　and　high-quality　economic　development.　This　paper　focuses　on　panel　data　from　266　cities　in　China　spanning　from　2013　to　2021.　It　specifically　examines　90　cities　designated　as　the　treatment　group　under　the　development　strategy　of　the　YEB.　The　research　employs　the　difference-in-difference　(DID)　method　to　evaluate　the　impact　of　the　development　strategy　of　the　YEB　on　the　synergistic　governance　of　pollution　control　and　carbon　reduction　(Governance).　The　research　results　show　that　the　development　strategy　of　the　YEB　has　a　positive　impact　on　Governance.　Additionally,　the　benchmark　regression　results　successfully　pass　six　types　of　robustness　tests.　Heterogeneity　analysis　indicates　that　the　development　strategy　of　the　YEB　has　a　more　significant　effect　on　the　Governance　in　large　and　resource-based　cities.　The　mechanism　tests　indicate　that　the　development　strategy　of　the　YEB　can　improve　the　Governance　in　the　region　through　increasing　the　investment　in　pollution　control　or　decreasing　the　intensity　of　energy　use.　This　paper　can　provide　some　experience　and　evidence　for　the　Governance　in　other　cities　©　2024