Aiming at the shortcomings of converter under traditional single phase-shift control, this paper analyzes the power transmission characteristics of bidirectional full bridge DC-DC converter with dual phase-shift control. On the condition that ratio of the transformer is not 1, the general low frequency small signal model of converter with dual phase-shift control is built. Compared with single phase-shift control, simulation results show that the loss power of dual phase-shift control is smaller. Finally, the experimental prototype is built, the experimental results confirm the feasibility and efficiency of this control mode. It broadens the range of selection of ratio of the converter, and has certain value in engineering application.