首次将哈密顿替代法用于计算类氦原子基态能量. 计算结果与单参数变分法给出的数值相同，比一阶微扰法计算的能量更接近实验值. 由于计算过程简单直观，不需选取试探波函数，不受微扰项大小限制，而且近似度高，该方法可在教学中采用.

The ground state energies of helium - like atoms are studied by using the Hamiltonian substitution method. 　　The calculated results are the same as those from the one - parameter variational approach and agreement in well 　　with experiment than the values from the first - order perturbation method. The present calculation is simple and comparatively 　　accurate，without the need for trial wave function and the limitation by the perturbation magnitude，so that the 　　Hamiltonian substitution method is an excellent choice for teaching.