In this article, the relative position between two planes, the perpendicular relation between two geometric elements and the angle between two planes in E~4--Space of Euclidian geometry are briefly analysed and discussed.

• 本文主要就E~4欧氏几何中两平面间的相对位置、两几何元素间的垂直关系以及两平面间的夹角问题进行分析讨论。