Based　on　the　policy　text　from　1999　to　2022,　this　paper　quantitatively　analyzes　photovoltaic　power,　wind　power　and　new　energy　policies　in　mainland　China　by　keyword　capture　and　policy　strength　and　establishes　a　spatial　Durbin　model　to　study　the　carbon　reduction　effects.　The　results　show　the　following:　(1)　The　development　of　new　energy　is　primarily　project-based　and　concentrated　in　rural　areas.　(2)　Financial　support　is　a　double-edged　sword.　(3)　After　the　implementation　of　the　Renewable　Energy　Law　in　2015,　the　change　trend　in　policy　quantity,　total　policy　intensity,　and　average　policy　intensity　is　generally　consistent.　(4)　The　increase　in　the　strength　of　new　energy　policies　has　effectively　reduced　the　intensity　of　provincial　carbon　dioxide　emissions.　(5)　New　energy　policies　introduced　in　a　single　region　are　less　effective　in　reducing　carbon　emissions　than　joint　regional　regulation.　Therefore,　it　is　necessary　to　improve　the　quality　and　coordination　of　new　energy　policies　through　the　effective　convergence　of　policies　and　regular　evaluations　to　enhance　the　positive　guidance　of　the　policies.　Policy　measures　for　new　energy　are　refined　in　three　areas:　improving　the　amount　and　quality　of　new　energy　policies,　strengthening　new　energy　policies　and　establishing　cooperation　mechanisms　for　the　cross-regional　consumption　of　new　energy.　©　2024　by　the　authors.