The effects of ball milling time,ball milling media,ball milling media types for carbon black physical properties are investigated by using mechanical ball milling.The micro morphology,surface structure,chemical group types,hole size,hole volume be analyzed by using infra sepectrometer,ASAP surface absorber respectively.It proves that in the same processing condition,ball milling time is the key factor for carbon black structure changes.The more ball milling time,the more modification of carbon black particle structure.Ball milling will change particle size structure,the types and quantity of surface group.As a result,the property of carbon black be modified.It proves that the modification property of 10%white carbon black hybrid carbon black is better than 5%white carbon black hybrid carbon black.