Abstract: The present invention provides an adaptive control method for a three-phase power rectifier and a device thereof that has anti-interference capability, can produce a desired DC voltage or low-harmonic-distortion current, allows for a simple structure and is easy to implement, in the technical field of power electronics control. The present invention considers an unknown load as an unknown disturbance, and use an adaptive controller to process the unknown disturbance of the three-phase power rectifier so that a DC-side voltage of the three-phase power rectifier tracks a reference value, to obtain a reference grid current; and uses an H? controller to track the reference grid current, to obtain a control input for the three-phase power rectifier. Simulation results demonstrate effectiveness of the present invention.