The　driving　mechanism　of　urban-rural　integration　development　(URID)　is　a　complex　and　organic　operation　system　that　continuously　evolves　and　plays　an　orderly　role.　In　order　to　expand　the　related　theoretical　system　on　the　driving　mechanism　of　URID　and　guide　the　URID　in　the　Yangtze　River　Delta,　this　study　constructed　a　system　dynamics　model　of　the　driving　mechanism　of　URID　in　the　Yangtze　River　Delta.　The　dynamic　evolution　characteristics　of　different　dimensions　and　the　comprehensive　level　of　URID　in　the　Yangtze　River　Delta　over　time　under　four　types　of　scenarios　(including　the　benchmark　scenario　and　scenarios　of　three　different　types　of　driving　factors:　Endogenous　factor,　exogenous　factor,　and　basic　factor)　were　simulated　and　analyzed.　Key　issues　in　the　driving　mechanism　of　URID　were　also　discussed.　The　results　show　that:　1)　The　overall　trend　of　the　levels　of　different　dimensions　and　the　comprehensive　level　of　URID　in　the　Yangtze　River　Delta　are　positive　under　the　benchmark　scenario.　2)　The　three　types　of　driving　factors　have　different　driving　paths　to　URID,　but　they　can　make　up　for　the　lack　of　driving　force　in　different　dimensions　of　URID　of　others.　3)　The　driving　effect　of　the　exogenous　factor　and　basic　factor　on　URID　in　the　Yangtze　River　Delta　is　obviously　weaker　than　that　of　the　endogenous　factor.　©　2024,　Editorial　office　of　PROGRESS　IN　GEOGRAPHY.　All　rights　reserved.