In order to make Cashew shell oil(CNSL)phenolic resin(PF) matrix friction material meet the demand for utilization in field of heavy machinery and equipment,based on the dry process,three groups of the Cashew shell oilphenolic resin matrix friction materials secondly blending modified by different content of nitrile rubber(NBR) powder were prepared,and the specimens’ mechanical properties ,heat resistance ,friction and wear performance was discussed.Experimental results show that;the addition of NBR can improve the impact strength,reduce the elastic and shear modulus.As the content of NBR increases,heat resistance of the specimens gradually decline.Specimens with 10% NBR content could ensure higher friction coefficient at relatively low temperature,while the specimens modified by 5% NBR content show lowest wear rate.