This　paper　measured　the　flow　characteristics,　friction　coefficient　and　forming　limit　diagram　(FLD)　at　high　temperature　for　hot　stamping　steel.　The　flow　behaviour　of　hot　stamping　steel　at　high　temperature　was　tested　by　using　of　Gleeble-3500　machine.　Double　power　function　and　Hollomon　equation　were　applied　to　describe　its　flow　behaviour.　The　result　indicated　that　strain　rate　and　temperature　has　notable　effects　on　work　hardening　of　hot　stamping　steel.　Self-regulating　setups　were　used　to　test　the　friction　coefficient　and　FLD　at　high　temperature.　Then　the　FLD　results　and　affecting　factors　were　analyzed　and　the　suggestion　for　FLD　calculation　at　high　temperature　was　advanced.