Titanium　and　titanium　alloys　which　hold　the　advantages　of　high　specific　strength,　favorable　corrosion　resistance　and　low-temperature　performance,　high　thermal　strength,　etc.,　have　become　a　kind　of　critical　structural　materials　in　aerospace　industry,　and　moreover,　have　displayed　considerable　application　potential　for　aeroengine　heat-enduring　parts　owing　to　superior　high-temperature　performance　compared　with　aluminum　alloys　and　magnesium　alloys.　In　1954,　the　United　States　developed　the　first　practical　high-temperature　titanium　alloy　Ti-6Al-4V　which　possesses　a　long-term　use　temperature　range　of　300-350　and　a　pleasurable　comprehensive　performance,　and　acquired　extensive　and　long-lasting　application.　With　the　continuous　progress　of　the　aerospace　industry,　especially　the　advent　of　aeroengines,　other　countries　successively　developed　some　higher-working-temperature　titanium　alloys,　among　which　IMI834,　as　the　world＇s　first　600　high　temperature　titanium　alloy,　was　created　in　1984　by　the　United　Kingdom.　The　typical　feature　of　IMI834　is　the　addition　of　0.06%　C　into　the　existing　Ti-Al-Sn-Zr-Mo-Si　titanium　alloy　system,　expanding　the　processing　window　and　optimizing　the　microstructure.　After　that,　the　United　States　obtained　a　high　temperature　titanium　alloy　Ti1100　in　1988,　by　adjusting　the　amount　of　some　alloying　elements　in　the　original　high-temperature　titanium　alloy　Ti-6542S.　In　1992,　Russia　also　established　its　high　temperature　titanium　alloy　BT36　by　substituting　5%　W　(a　high-melting-point　element)　for　1%　Nb　within　BT18Y.　China＇s　research　of　high-temperature　titanium　alloy　started　relatively　late,　initially　imitated　foreign　alloys,　and　later　specialized　in　utilizing　rare　earth　elements　to　design　high-temperature　titanium　alloys.　The　Ti60　and　Ti600　alloys,　developed　by　IMR　(CAS)/BaoTi　Group　and　NIN　respectively,　both　have　the　working　temperature　of　600　and　favorable　comprehensive　performance.　In　general,　the　upper　temperature　limit　of　high-temperature　titanium　is　difficult　to　exceed　600　at　present.　Sufficient　studies　have　proved　that　the　nearly　ineliminable　mismatch　between　thermal　strength　and　thermal　stability　and　the　steep-oxidation-resistance-decay-induced　severe　surface　oxidation　at　above　600　will　result　in　the　deterioration　of　thermal　stability　and　fatigue　properties,　and　even,　the　risk　of　＇titanium　fire＇　for　those　components　serving　in　the　high-pressure　compressor　section　of　an　aeroengine.　This　review　is　concerned　with　the　worldwide　development　status　of　600　and　above　high-temperature　titanium　alloys.　We　give　introductions　for　the　600　high-temperature　titanium　alloys　including　Ti1100　(US),　IMI834　(UK),　BT36　(Russia),　and　Ti60/TG6/Ti600　(China),　as　well　as　the　600-above　ones　including　Ti65/Ti750　(China).　The　major　nations＇　design　schemes　of　high-temperature　titanium　alloys　and　the　obstacles　to　raising　the　upper　temperature　limit　are　outlined,　and　some　possible　solutions　are　put　forward.　The　paper　ends　with　a　prospective　discussion　over　the　future　trends　of　high-temperature　titanium　alloys,　from　the　perspectives　of　controlling　the　size,　morphology　and　content　of　α2　phase　and　adjusting　the　hot　working　process.　©　2018,　Materials　Review　Magazine.　All　right　reserved.