本文讨论了不同类型多面体硼烷的结构规则,建立了硼烷成键分子轨道数与其硼多面体骨架的顶点数和面数之间的关系,并表述为统一的拓扑公式。对于单多面体硼烷结构,该公式与Wade规则等价,但是它还可以用于讨论各种稠合型多面体硼烷的结构。按此公式,可以认为硼烷的成键分子轨道数由硼多面体骨架完全确定。量子化学计算结果对此给以很好的验证。 This paper discusses the structural rules of different types of polyhedron boranes and establishes the relationship between the molecular orbital number of boranes and the number of vertices and faces of the boron polyhedron skeleton, which is expressed as a unified topological formula. This formula is equivalent to the Wade rule for a single polyhedron borane structure, but it can also be used to discuss the structure of various fused polyhedron boranes. According to this formula, it can be considered that the bonding molecular orbital of borane is completely determined by the boron polyhedral framework. Quantum chemistry calculations give good results.