With　the　continuous　development　of　metallurgy,　machinery　and　other　fields　in　China,　the　requirements　for　the　properties　of　iron　and　steel　materials　are　becoming　more　and　more　strict.　Automotive　steel　is　required　not　only　to　lose　weight　but　also　to　have　high　enough　impact　resistance　to　ensure　safety.　Wear-resistant　materials　should　have　not　only　strong　hardness　but　also　good　toughness.　The　Quenching　and　Partitioning　(Q&P)　process　of　alloy　steel　was　proposed　by　Professor　Speer　J　G　of　the　United　States　in　2003　inspired　by　Trip　steel.　The　ultimate　goal　is　to　obtain　a　certain　amount　of　soft　phase　retained　austenite　on　the　hard　phase　matrix,　so　as　to　improve　the　plasticity　and　toughness　of　the　steel.　Martensite　and　bainite　ensure　strength　and　retained　austenite　can　improve　toughness,　and　the　combination　of　the　two　phases　has　good　comprehensive　mechanical　properties.　Different　from　the　traditional　process　of　quenching　tempering　(QT)　inhibiting　carbide　precipitation,　the　carbon　in　the　steel　is　not　decomposed　into　carbide,　but　is　rediffused　to　austenite　in　the　process　of　heat　preservation,　which　improves　the　stability　of　austenite.　Q&P　steel　has　the　characteristics　of　low　cost,　good　performance　and　relatively　simple　process,　when　initially　applied　to　automobile　high　strength　steel,　it　can　greatly　reduce　the　weight　of　automobile,　improve　anti-collision　ability　and　reduce　the　degree　of　deformation.　In　succession,　some　researchers　have　applied　Q&P　process　to　wear-resistant　materials,　and　found　that　the　toughness　can　be　greatly　improved　with　little　or　no　loss　of　wear　resistance.　In　order　to　further　improve　the　properties,　many　researchers　at　home　and　abroad　have　done　a　lot　of　research.　In　the　optimization　of　heat　treatment　process,　it　is　found　that　the　parameters　such　as　austenitizing　temperature,　quenching　process　and　partitioning　process　have　great　influence　on　the　microstructure　and　properties　of　Q&P　steel.　In　terms　of　alloying　element　control,　not　only　conventional　alloy　elements　such　as　C,　Mn　and　Si　have　important　influence　on　the　properties　of　Q&P　steel,　micro　alloying　elements　such　as　Nb　and　Mo　also　have　great　influence　on　the　microstructure　and　properties　of　Q&P　steel.　The　proposal　and　development　of　Q&P　process　were　described　mainly,　the　research　status　at　home　and　abroad,　and　the　application　of　Q&P　process　were　discribed　mainly.　Finally,　the　future　development　of　Q&P　process　is　prospected　and　summarized.　©　2022,　CISRI　Boyuan　Publishing　Co.,　Ltd.　All　right　reserved.