同坡屋面投影是《建筑工程制图与识图》课程教学中的一个重要组成部分。本文对同坡屋面水平投影的基本概念、特点等内容进行疏理,分析得出同坡屋面水平投影的绘制技巧,通过案例进一步说明使用绘制技巧的优越性,以加深对同坡屋面水平投影知识的理解,提高绘制同坡屋面水平投影的速度和能力。 Roof Slope Projection is an important part of the teaching of Architectural Engineering Drawing and Recognition. In this paper, the basic concept, characteristics and other aspects of the same level roof projective are analyzed, and the drawing skills of the horizontal projection of the same slope roof are analyzed. The advantages of using drawing skills are further illustrated through examples to deepen the knowledge of horizontal projection of the same slope roof Understand and improve the speed and ability to draw horizontal projections of the same roof.