The semiclassical quantization rule is derived for a system with a spherically symmetric potential V (r) ∼ r ν (−2 < ν < ∞) and an Aharonov-Bohm magnetic flux. Numerical results are presented and compared with known results for models with ν = −1, 0, 2, ∞. It is shown that the results provided by our method are in good agreement with previous results. One expects that the semiclassical quantization rule shown in this paper will provide a good approximation for all principle quantum number even the rule is derived in the large principal quantum number limit n ≫ 1. We also discuss the power parameter ν dependence of the energy spectra pattern in this paper.