Abstract: Considering the electron coulomb interaction and exchange interaction and polarization interaction(electron correlation effect)between the highly excited state electron of the alkali metal atom and the ion core electrons,we calculated the wave function and energy levels of alkali metal atom Li,Na,K highly excited states(6≤ N ≤15, l ≤2).The calculated results indicate that our energy levels values are lower than experimental data when the highly excited states exchange potential is replaced by GKS potential;If the highly excited states exchange potential is replaced by the hammerling potential our theoretical results are in good agreement with the experiment.