有机分子中原子的共面共线是中学有机化学教学的一个难点,本文通过建立合适的有机分子空间基本模型,并进行合理地拓展来解决较复杂的有机分子空间共面共线问题. The co-planar collinearity of atoms in organic molecules is a difficult point in the teaching of organic chemistry in middle schools. In this paper, we establish a suitable basic model of organic molecular space and extend it reasonably to solve the more complicated coplanar problem of organic molecules.