The invention discloses an analysis method for a DVR compensatory strategy in the technical field of control of the electric power system. The analysis method adopts the technical scheme that the system voltage phasor after temporary reduction or rise is arranged into a transverse axle, and the circle center of a compensatory limit circle taking the DVR limit offset voltage as the radius is arranged at the end point of the system voltage phasor; the probable value of the load voltage after the DVR compensation is intuitively obtained through the positions of the compensatory limit circle and the load rated voltage amplitude value trail, and whether the load voltage can be restored to the level before the temporary reduction or rise is judged; and finally, the amplitude value and the phase of the DVR offset voltage are determined according to the compensatory strategy set in advance. Compared with the traditional method, the invention has the advantages that the invention has clear physical concept and simple and convenient calculation and is more favorable for the analysis and the determination of the DVR compensatory strategy.