分子轨道理论是近三十年来化学理论的最大成就之一，它主要包括从日本福井兼一等人提出的“前线轨道”概念发展而来的“前线轨道理论”，以及美国伍德沃德（R·B·Woodward）和霍夫曼（R·Hoffmann）共同创立的“分子轨道对称守恒原理”。众所周知，化学不仅要掌握地学微粒结构 Molecular orbital theory is one of the most significant achievements of chemical theory in the past thirty years. It mainly includes the “frontier orbital theory” derived from the concept of “frontier orbit” proposed by Fukui and his colleagues in Japan and the United States Woodward · B · Woodward and Hoffmann (R · Hoffmann) co-founded the “principle of conservation of molecular orbital symmetry.” As we all know, chemistry should not only master the geology particle structure