The performance of ceramic materials is superior,and the difficulty of processing is mainly reflected in the hardness and brittleness of processing.Laser-assisted thermal machining of ceramic materials can effectively avoid surface cracks during processing.In the paper,the semi-analytical method is used to simulate the temperature of alumina ceramic material which heated by laser,the variation of temperature in different directions is analyzed,and the distribution of temperature fieldis obtained.According to the theory of softening effect of alumina ceramics when the temperature reaches 1000 K,the distribution of temperature field with different parameters is discussed,and then the bettersoftening effect is achieved.The results show that,through the calculation and simulation of the temperature field,selecting suitable laser parameters to soften materials of different sizes can effectively and efficiently meet the technical requirements for cutting rigid alumina materials.