The thermal analysis module of ANSYS software is used for grinding temperature field simulation analysis through the de-termination of the moving heat source loading method to obtain the temperature field distribution of different load steps and the tem-perature change curve of nodes in different depth,the temperature is higher with being more close to the heat source and the temper-ature rise of artifacts below materials is lower than the workpiece surface.The influence cirele of the main grinding parameters on the grinding zone temperature field is gotten by change the wheel speed,workpiece feed speed and grinding depth,titanium al oy grind-ing existing critical grinding speed is verified.The grinding temperature fal s in a certain interval near the critical grinding speed,so the appropriate grinding speed, high feed speed and low grinding xepth can effectively reduce the grinding temperature.%通过确定移动热源的加载方式，运用ANSYS软件的热分析模块对磨削温度场进行仿真分析，得到了不同载荷步的温度场分布以及不同深度的节点的温度变化曲线，验证了越靠近热源磨削温度越高以及工件下层材料温升显著低于工件表面。通过改变砂轮线速度、工件进给速度和磨削深度，得到了主要的磨削参数对磨削区温度场的影响状况，证明了钛合金磨削存在临界磨削速度。在临界磨削速度附近某一区间磨削温度出现回落，因此适当的磨削速度、高的工件进给速度和小的磨削深度可以有效的减小磨削温度。
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