The　effect　of　bonding　mixture　of　β-sitosterol　and　γ-oryzanol　on　the　hardness,　polymorphism,　melting　properties　and　surface　topography　of　lipid　oil　were　determined　by　texture　analyzer,　X-ray　diffraction,　differential　scanning　calorimetry　(DSC)　and　atomic　force　microscopy　(AFM),　respectively.　The　data　showed　that　the　hardness　provided　by　bonding　mixture　of　β-sitosterol　and　γ-oryzanol　was　equal　to　2.2　to　2.8　times　than　that　of　tristearin　when　the　saturate　fat　content　was　30%　to　50%.　The　addition　of　8%　bonding　mixture　in　palm　oil　resulted　in　a　few　of　β　form　crystal　appearing,　and　the　daily　average　transition　rate　from　β＇　to　β　form　increased　0.11%　during　25　days　storage.　The　oil　phrase　Tpeak　increased　7.37℃,　ΔH　decerased　4.12　J/g　while　no　obvious　changes　of　Tend　were　observed　in　DSC　results.　AFM　images　revealed　that　the　crystal　behavior　of　palm　oil　became　more　fine　and　well-distributed,　and　the　network　structure　has　been　enhanced.　©,　2015,　Editorial　Department,　Chinese　Cereals　and　Oils　Association.　All　right　reserved.