分类讨论不仅是一种重要的数学思想 ,也是一种常用的解题策略 .但是 ,由于学生难以全面把握分类的原则和分类的对象、标准及层次 ,使讨论的过程复杂、冗长 ,各种错误时有出现 .如何能突出问题的本质 ,优化讨论过程从而提高解题速度呢 ?本文举例介绍优化讨论过程的若干途径 .1　 Classification discussion is not only an important mathematical idea, but also a commonly used problem-solving strategy. However, due to students’ difficulties in fully grasping the principles of classification and the objects, standards and levels of classification, the process of discussion is complicated and lengthy, and various errors have been made. From time to time, how can we highlight the nature of the problem and optimize the discussion process so as to increase the speed of problem solving? This paper gives examples of ways to optimize the discussion process.