在考虑了BCS理论的相对论平均场模型框架内,通过系统研究N=8,20,28,50,82和126六条同中子素链中每个元素费米面附近的单粒子能级间隔、粒子数占有概率比以及原子核体系的粒子数偏离随质子数的变化规律,讨论了传统中子幻数的壳结构在从中子滴线区到质子滴线区整个核谱上的稳定性,预言只有在轻核的丰中子区域,传统的中子幻数效应才可能消失,并把计算结果和最近的文献报道作了比较. Based on the theory of relativistic mean field considering BCS theory, by systematically studying the single-particle level separation near the Fermi level in each of the six neutron chains of N = 8, 20, 28, 50, 82 and 126, Number occupancy probability ratio and the variation of particle number of nucleus system with the number of protons, we discuss the stability of the shell structure of traditional neutron magic phantom over the entire nuclear spectrum from the neutron drip line region to the proton drip line region. In the light-neutron rich neutron region, the classical neutron magic effect disappears, and the calculation results are compared with the recent literature.