The invention discloses a back-stepping direct power control (DPC) method of a DFIG. According to the method, on the basis of combination of a back-stepping algorithm and a DPC technology, calculation is carried out by using a power reference value, an actual value, and a stator side voltage so as to obtain a reference value of a rotator side output voltage; and then modulation is carried out by a SVPWM module to obtain switching signals Sa, Sb, and Sc. The whole control process is carried out under a stationary coordinate system without the need of coordinate rotation and conversion; and independent and effective control of the active power and reactive power of the DFIG can be realized only by adjusting two adjustable parameters kp and kq, so that the control structure becomes simple. With inheriting of the excellent dynamic performance of the traditional DPC, the current harmonic wave and the power fluctuation can be reduced and the constant switching frequency can be obtained; and the good steady-state and dynamic performances are also realized.