The　influence　of　different　configurations,　such　as　vortex　tube　length,　separation　chamber　diameter　and　cold　plate　diameter　on　the　vortex　tube　performance　was　investigated　by　experiment　with　air　as　medium.　The　main　influence　of　length　and　diameter　on　the　vortex　tube　performance　was　obtained.　The　result　indicates　that　the　performance　can　be　improved　by　the　increase　of　hot　tube　length　in　a　certain　range.　The　cooling　effect　of　vortex　tube　with　larger　separation　chamber　diameter　is　better　than　that　with　smaller　diameter　in　the　condition　of　higher　cold　mass　flow　fraction.　The　less　the　diameter　of　cold　plate　is,　the　better　performance　will　be.　The　best　cooling　effect　and　heating　effect　occur　at　the　diameter　ratio　of　hot　section　inner　diameter　to　cold　plate　hole　diameter　being　50%.