In order to improve the friction and wear performance of cemented carbide tool in cutting titanium alloy so as to reduce the amount of concentrated emulsified cutting fluid used in titanium alloy machining,WC-6Co cemented carbide was strengthened by using pulse magnetic field,and the effect of magnetic field treatment on the friction behavior of WC-6Co/Ti alloy under different ratio of cutting fluid lubrication.The results show that after pulse magnetic field treatment,the friction properties of WC-6Co/titanium alloy is greatly improved,and with the decrease of the ratio of concentrated emulsified cutting fluid and water,the friction coefficient is significantly reduced.The surface of WC-6Co carbide/titanium alloy is strengthened after pulse magnetic field treatment,and the Co shedding of bonding phase is reduced.The improvement of wear performance of WC-6Co carbide is the coupling result of the strengthening effect of Co phase magnetostriction on cemented carbide under pulsed magnetic field and the adsorption of oil droplets in cutting fluid by cemented carbide remanence.