The present invention discloses a dual-active bridge DC converter direct power control method based on energy closed loop, and is suitable for the field of large-power bidirectional direct current conversion. Aiming at the dynamic response problem of a bidirectional full-bridge direct current converter, on the basis of single phase-shifting control, according to an output energy balance equation,an output voltage Uout is sampled and then squared to construct an output capacitance energy closed loop, the size of a phase-shifting angle is obtained through the direct power based on the dual-active bridge direct current converter power transmission model to generate switching control signals so as to achieve rapid regulation of the output voltage of the dual-active bridge DC converter. The method provided by the invention can effectively improve the dynamic response speed of the output voltage when a load is suddenly changed, only needs to sample the output voltage, and is low in cost, not sensitive to model parameters and easy for design and engineering implementation.