近年的高考试题都有一道立体几何的解答题 ,用传统方法解答往往步骤繁琐 ,需要做大量的定性说明论证 .高中新教材第二册 (下B)引入了空间向量坐标运算这一内容 ,使得空间立体几何中的平行、垂直、角、距离等问题避免了传统方法中进行大量繁琐的定性分析 ,只需建立空间直角坐标 In recent years, the high-examination questions have a three-dimensional geometric solution. The traditional method is often used to solve the cumbersome steps, and a lot of qualitative explanations are needed. The second volume of the new high school textbook (B) introduces the space vector coordinate calculation. The problems of parallel, vertical, angle, and distance in spatial three-dimensional geometry avoid the large number of tedious qualitative analysis in traditional methods, and only need to establish the spatial rectangular coordinates.