正方体是立体几何中最基本、最重要的几何体之一.以正方体为载体的计数问题也一直备受关注,而学生则往往因对其中蕴含的点、线、面等基本组成不甚了了而常常出错.本文对正方体的基本构成进行较全面的总结,并设计了一些巩固练习. The cube is one of the most basic and most important geometry in the three-dimensional geometry. The counting problem with the cube as the carrier has also been attracting attention, while the students are often not satisfied with the basic composition of points, lines, and surfaces contained therein. Frequent mistakes. This article gives a more comprehensive summary of the basic composition of the cube, and designed some consolidation exercises.