Reinforcement in filled elastomers is not well understood but is generally attributed to the good dispersion and strong interactions between the added particles and rubber. In addition to good dispersion of silica in elastomer matrix, the strong interfacial interaction between silica and elastomers matrix are keys for the preparation of high performance silica/elastomers nanocomposites. The existence of a glassy layer at the particle-rubber interface due to the interactions between the particles and the rubber has been suggested to explain early NMR results and mechanical data. Up to now, various methods have been developed for detecting the interfacial interaction of elastomer nanocomposites. The most commonly used method is measuring the mechanical properties i.e. higher tensile strength and elastic modulus indirectly indicates the stronger interfacial interaction between nanoparticle and elastomers. The higher content of the bound rubber on the nanoparticles is also a traditional method to indirectly indicates the stronger interfacial interaction between filler and elastomers. As commonly accepted, the polymer chain mobility in the vicinity of filler surface is constrained comparing with that in the polymer matrix,DMA,DSC,DRS,TSDC,even Roman spectrum are used to estimate the interphase chain mobility.However,the above methods are qualitative or semiquantitative,based on recently developed Peak force Quantitative Nanomechanical Mapping (PF-QNM) technique,we build a new method simple but powful to quantitative characterize the interfacial performance of silica/elastomer nanocomposites.