Abstract: A method of measuring thermoplastic styrene-butadiene rubber SBS (simply called SBS) crumb sample′s physical performance is introduced. Under an appropriate experiment condition adopting immediate compressing method to flate the SBS sample without filling with oil and filled with oil 10phr, 37.5phr, 50phr. The experimental result shows no difference to the result from traditional roll flaking. This method can measure SBS sample′s physical performance easily, quickly and effectually.