To find a more suitable wear-resistant material forming method for current industrial applications, WCp/Fe monolithic composites were prepared by the lost foam casting process. The effects of casting method on the hardness and wear resistance of WCp/Fe composites were studied. The results show that after adding different particle sizes of WC particles, the three casting methods of top casting, gap casting, and bottom casting all significantly improve the hardness and wear resistance of the WC/Fe composite test blocks. Under the same casting method, with the decrease of WC particle size, the hardness and wear resistance of the test blocks gradually increase. Because the filling process of gap casting is relatively stable, the hardness and wear resistance of the test blocks are higher than the top and bottom casting methods. With the decrease of WC particle size, the hardness and wear resistance increase. When the WC particle size is 2 500 mesh, the hardness reaches HRC 50, which is 2.21 times higher than the wear resistance of the base material.