自提出“轨道对称守恒原理”以来,人们从不同的角度对σ键迁移反应作了理论研究。但对这类反应的全过程是否具有对称性,至今仍有争议,而且同一反应的轨道能量相关图,在不同文献中也有很大的差别,因而有进一步研究的必要。本文对σ键迁移反应的全过程引 Since the “principle of conservation of orbital symmetry” has been proposed, people have made theoretical studies on the σ bond migration reaction from different perspectives. However, it is still controversial whether the whole process of such reactions is symmetrical or not. Moreover, the orbital energy correlation diagram of the same reaction varies greatly in different literatures, so there is a need for further research. In this paper, the whole process of σ bond migration reaction cited