With　the　development　of　the　city,　the　subway　has　been　developed　vigorously.　along　with　a　large　number　of　subway　construction,　the　use　of　subway　design　simulation　software　was　more　and　more　prominent.　SES　simulation　software　is　commonly　used　software　in　China　Subway　Thermal　Environment　Simulation　and　Design,　With　the　premise　of　subway　operation　mode　determined　to　simulate　the　thermal　environment　of　the　subway,　to　simulate　the　thermal　environment　of　the　subway.　This　article　built　the　simulation　model　of　the　subway　stations　in　a　realistic　line　in　the　hot　summer　and　cold　winter　area,　to　simulate　and　analyze　the　subway　tunnel　ventilation,　temperature,　the　conclusion　is　that　the　environment　within　the　subway　is　reasonable　and　comfort.