将空间问题化归为平面问题来解决,是立体几何解题的基本思路,也是学好立体几何的关键.然而空间问题平面化方法的运用和掌握只能在日常教学中滴滴渗透,因而往往缺乏系统性,常常导致学生认识的片面和运用的呆板.本文试图通过归纳立体几何问题化归转化的类型及策略,促使学生认识的深化. The problem of solving the problem of space as a plane problem is the basic idea of ​​solving the problem of three-dimensional geometry and also the key to learning three-dimensional geometry.However, the application and mastery of the method of planarization of space problems can only be infiltrated into the daily teaching and often lack Systematic, often lead to one-sided students and the use of dull.This paper attempts to induce the transformation of the three-dimensional geometry problems and strategies to promote the deepening of students’ understanding.