Abstract: AlCrN coating is deposited on YG8 cemented carbide by physical vapor deposition after micro-sandblasting pretreatment of YG8. The effect of micro-sandblasting pretreatment parameters on the surface integrity (surface morphology, surface roughness, surface hardness and surface stress) is studied. The results show that the surface defects and the surface roughness Ra of the coated tool are reduced under the micro-sandblasting parameter of P=0.3 MPa and T=30 s, while the microhardness and surface residual stress of the coated tool are improved. And then the influence of micro-sandblasting pretreatment on the surface integrity of coated tools is explored. The micro-sandblasting process parameters are optimized. This work is helpful to promote the development of surface treatment technology of coated tools.