Gas-lubricated　microbearings　are　widely　applied　in　multiple　fields　due　to　their　advantages　of　high-speed,　low　friction　level　and　other　features.　The　operating　environment　of　microbearings　is　complex,　and　the　difference　of　temperature　has　an　important　influence　on　their　comprehensive　performance.　In　this　investigation,　FEM　(finite　element　method)　is　employed　to　investigate　the　static,　dynamic　and　limit　characteristics　of　microbearings　lubricated　by　different　kinds　of　gas　at　different　temperatures.　The　results　show　that　the　rise　of　temperature　leads　to　the　decline　of　equivalent　viscosity　of　gas,　which　weakens　the　load　capacity　of　microbearings,　and　furthermore,　affects　the　operating　stability　of　microbearings.　The　dynamic　performances　of　microbearings　at　different　temperatures　are　very　different,　and　the　two　dynamic　limit　characteristics　are　more　sensitive　to　temperature　when　it　changes.　©　2020　by　the　authors.