In　this　paper,　it　was　investigated　experimentally　that　the　effect　of　working　fluid,　thickness　and　mesh　size　on　the　thermal　performance　of　sintered　mesh　screen　structure　surface　at　different　pressures.　We　choose　R141b,　R113　and　R649　as　working　fluid;　the　operational　pressures　in　this　study　was　in　the　range　of　0.86×105~2.0×105　Pa;　the　thicknesses　of　screen　structure　were　in　the　range　of　0.6　mm,　0.8　mm,　1.0　mm　respectively;　and　the　mesh　size　of　the　sintered　mesh　structure　is　60　and　140.　The　experimental　results　show　that　the　operational　pressure,　the　thickness　and　the　mesh　size　of　screen　structure　have　significantly　effect　on　heat　transfer　characteristics.　The　nucleation　site　density　increased　with　the　increasing　of　heat　flux.　It　was　quite　different　of　the　process　of　bubble　growth　in　the　evaporator　compared　with　in　pool　boiling.