本文提出了一个简单的同系递变函数p=a+b/(n+t),其中a和b是和能级有关的常数,n为同系序数,t为端基当量.用194组共轭多烯和多炔的电子光谱数据验证结果,相关系数全部达到了优良,其中优占94.3%,超过了以前的各个公式.还讨论了影响a值的各种因素. In this paper, we propose a simple homologous evolution function p = a + b / (n + t), where a and b are constants related to the energy level, n is the homologous ordinal number, and t is the terminal equivalent. The correlation coefficients of polyene and polytyne electron spectroscopy data all achieved good results, accounting for 94.3% of the total, which exceeded the previous formulas. Various factors affecting a were also discussed.