A　method　for　simulating　a　three-dimensional　wind　field　is　proposed　in　which　a　graphics　engine　is　used　together　with　some　feature　data　from　CFD　(computational　fluid　dynamics)　calculations.　First,　important　data　such　as　DEM　(digital　elevation　model),　wind　speed　and　wind　direction　data　are　extracted　from　the　CFD　output　file.　Combined　with　data　that　may　represent　the　characteristics　of　wind,　including　wind　speeds,　wind　directions,　grid　unit　wind　direction　vectors　and　unit　vectors　normal　to　the　topography,　the　wind　properties　of　each　grid　are　derived.　Then,　the　organization　mode　of　the　terrain　grid　is　optimized　based　on　the　OSG　(OpenSceneGraph)　graphics　engine.　Furthermore,　multithreading　tasks　load　the　segmented　terrain　maps　and　generate　the　texture.　The　main　thread　renders　all　the　generated　textures　in　batches　according　to　the　index　file　and　synthesizes　the　whole　terrain.　In　this　way,　the　nodes　of　the　wind　field　are　set　up　and　modified　according　to　the　properties　of　the　corresponding　grids.　Finally,　the　Euler　and　Lagrangian　methods　are　applied　to　describe　the　wind　field　features:　the　former　describes　the　velocity　and　direction　of　each　point　in　the　field　at　a　certain　time,　while　the　latter　is　adopted　to　continuously　represent　the　changes　in　the　velocity　and　direction　of　a　particle.　Experimental　results　show　that　the　FPS　(frames　per　second)　value　is　within　a　reasonable　range　and　can　still　meet　the　real-time　requirements　of　rendering　as　the　research　area　expands.