The invention discloses a regenerative braking energy recycling control method, system and device. The method comprises the steps of acquiring a DC voltage of a DC bus of a DC traction network in realtime and a DC-side divided current of each rectifier for supplying power to the DC bus, and calculating to obtain a DC-side total current according to the DC-side divided current; comparing the DC voltage with a preset voltage threshold to obtain a voltage comparison result, and comparing the DC-side total current with a preset current threshold to obtain a current comparison result; and performing energy absorption operation or energy releasing operation according to the voltage comparison result and the current comparison result. By dual judgment mechanisms of the DC voltage and the DC-sidetotal current, the accuracy and the reliability of the regenerative braking energy recycling system are improved.