Improving the tribological properties of tungsten steel is of great significance for improving the service accuracy and service life of tungsten based mechanical parts.The micro-indentation structure on the surface of tungsten steel was processed by laser processing,and the Sn-Ni composite lubricant was infiltrated into the micro indentation structure of tungsten steel by means of high-temperature infiltration to prepare the sample of tungsten steel filled with Sn-Ni composite lubricant.The friction reducing and anti-wear properties of the samples were tested by a ball disc friction and wear tester.The results show that the tungsten steel sample filled with Sn-Ni composite lubricant has excellent tribological properties.Compared with pure tungsten steel,the friction coefficient of the tungsten steel sample filled with Sn-Ni composite lubricant is reduced by more than 19% and the wear rate is reduced by more than 50%.Under low load and high frequency,Sn-Ni lubricant has a good synergistic effect with the wear debris from the matrix material,which makes the tungsten steel sample filled with Sn-Ni composite lubricant has better friction reducing and anti-wear properties.