Considering the robustness and commonness, it uses the evolutionary algorithm to calculate the characteristic of H^- and He in outfield.The calculation for ground state energy of H^- and He can be converted to a problem of function optimization.At first the MCI method is adopted to deal with state wave functions of H^- and He, then the evolutionary algorithm calculates their ground state energies.Results show that it can obtain much more accurate results, and compared with other algorithms, it's more efficient.