The WC/Co50/Al cemented carbide coated tools with good macro morphology, uniform and dense microstructure, no pores and cracks are prepared by the laser cladding additive manufacturing technique. The study results show that the laser cladding layer of tools mainly consists of WC, W2C, Al2O3, Co3W3C, solid solution CoCr and (Co, Ni, Fe, Cr)2Si phases. The large hard WC particles on the laser cladding coating surface is coated in the Co50 bonding phase. The solid solution is formed by small WC particles with partial melting and decomposition. The axial and the radial cutting force are relatively stable in the cutting process, while the tangential cutting force fluctuates greatly. The tangential cutting force and the cutting heat of the laser-cladding cemented carbide tools are higher than those of YG8 cemented carbide cutting tools. However, the friction coefficient and the surface roughness of the work piece treated by the former are less than those by the latter.