The coated cutting tools are a kind of advanced cutting tool with good cutting performance.The cutting performance and application of every coated cutting tool in cutting machining areoutlined. They have been developed from single metal coated cutting tools to multi-constituentcoated cutting tools. Then the coatings have been improved from the single layer tomultilayer, and the nano-composite coatings are the development trend. So thenano-composite coated cutting tools will be the application hotspot in the future. The servicelife of coated cutting tools and their comprehensive mechanical property can be enhancedmore effectively than their uncoated counterparts, thus the mechanical processing efficiency isimproved largely.