Series type energy recovery circuit guarantees the safety of charging power supply in pulse power system under abnormal conditions relying on circuit structure, but oscillation of recovery circuit will occur when the load capacitor is charged via recovery inductor by constant current charging power supply, which will not only cause the overvoltage of charging power supply and increase the loss of recovery inductance, but also lead to obvious deterioration of voltage consistency. Based on the analysis of the oscillation characteristics of the recovery circuit, the structure of the bypass switch connected with the recovery inductor and the double input for recovery circuit and the corresponding charging control method are proposed. It can not only suppress the oscillation of the circuit to improve the charging voltage consistency, but also significantly reduce the unnecessary loss of the recovery inductor and the bypass switch, besides, the control method is simple and universal. The circuit simulation and the experiment were carried out on a 600 V/400 A charging system with a series type recovery circuit, and the experimental results show that with the improved recovery circuit, the consistency deviation of the load capacitor voltage is reduced to 2.6 V from 10 V, and the relative deviation is reduced to 0.5% from 1.7% under the condition of 600 V pulse repetition.