近几年的高考数学试题,设置了一些数学学科内的综合题,它们的新颖性、综合性,值得我们重视．在知识网络交汇处设计试题是高考命题的一个方向,空间轨迹问题正是在这种背景下“闪亮登场”．由于这类题目涵盖的知识点多,数学思想和方法考查充分,学生求解起来颇感困难,考试时经常弃而不答,令人惋惜． In recent years, the college entrance examination mathematics test questions have set up some comprehensive questions in mathematics subjects. Their novelty and comprehensiveness deserve our attention. The design of test questions at the intersection of knowledge networks is a direction of the college entrance examination proposition, and the space trajectory problem is precisely in this context “brightly debut.” Because these topics cover a lot of knowledge, mathematics ideas and methods are fully examined, students find it difficult to solve them, and they often abandon the examinations, which is regrettable.