With　the　increasing　frequency　of　extreme　disasters,　effectively　utilizing　park　green　spaces　in　both　daily　life　and　disaster　scenarios　has　emerged　as　a　new　challenge,　particularly　in　county-level　cities.　In　this　context,　the　core　planning　area　of　Anxi　County　in　Quanzhou　was　selected　as　the　study　site.　By　adjusting　the　layout　and　scale　of　park　green　spaces,　this　research　investigates　how　such　modifications　influence　the　quality　of　the　urban　wind　environment　and　green　space　accessibility　in　county-level　cities.　The　results　show　the　following:　(1)　Under　the　vegetation　ratio　of　trees-shrubs-herbaceous　plants,　the　ventilation　performance　of　the　urban　wind　environment　improved　at　a　daily　wind　speed　of　5　m/s.　The　wind　speed　increased　from　the　current　low　base　speed　(0-1　m/s)　to　a　moderate　speed　(2-5　m/s),　significantly　enhancing　the　comfort　of　the　population.　(2)　Under　the　vegetation　ratio　of　trees-shrubs-herbaceous　plants,　the　overall　disaster-prevention　performance　of　the　county　improved.　During　typhoon　wind　speeds　(50　m/s),　the　wind　speed　gradually　decreased　from　partially　higher　speeds　(40-50　m/s)　to　lower　speeds　(10-20　m/s),　resulting　in　a　significant　improvement　in　the　wind　environment.　(3)　After　optimizing　the　layout　of　park　green　spaces,　accessibility　was　greatly　enhanced,　better　meeting　the　needs　of　the　population　in　the　developed　area.