The dual-active-bridge isolated bidirectional DC-DC converter (DAB-IBDC) is a crucial device for galvanic isolation, voltage conversion, power transfer, and bus connection in the DC power conversion systems. Phase-shift modulation is an effective method to improve DAB-IBDC performance. However, the phase-shift control strategies in the previous literatures mainly focus on optimizing the characteristic of DAB-IBDC in a single aspect. In this paper, to optimize high-frequency-link (HFL) reactive power, current stress, and efficiency simultaneously, a new multi-objective optimization strategy based on dual-phase-shift (DPS) control is proposed. The power characterization, current stress, and power loss of the DAB-IBDC are analyzed. Besides, both the control principle and framework of the proposed control strategy are described in detail. Finally, the experiment results obtained from an established DAB-IBDC prototype are presented to verify the correctness and superiority of the proposed strategy.