In view of the actual bus charging station running brings to the power grid harmonic and power load impact problems,a kind of charging control strategy to reduce the harmonic content and power load of charging at noon comes up and carries on the simulation in according to the charging station actual operation from the Angle of harmonic suppression and power load balance by constructing the model analysis of charging stations harmonic characteristic.The simulation results show that the charge under this kind of charging control strategy can reduce the harmonic content effectively and can cut down the peak load availably.