As a new non -conventional machining technology concerned by machining community in the world, laser-assisted machining(LAM)is a combination of optics, material science, heat transfer, physics, mechanics and mechanical machining. Although the materials with excellent mechanical properties such as Si3N4 ceramics are more and more widely applied in engineering, their development is restricted by their poor machined ability. Much research work has proved that LAM can be a good solution to this pr...