Disclosed is a sludge three-dimensional electroosmosis drainage reinforcing method based on a novel electric geotextile complex, and belongs to the field of soft soil foundation reinforcement. A novel electric geotextile complex is adopted, and a designed multidirectional three-dimensional continuous electroosmosis drainage method is adopted to perform rapid drainage reinforcement treatment on sludge, wherein the electric geotextile complex is prepared by combining fibers and conductive materials with a flexible drainage plate and has the effects of electric conductive, drainage, corrosion resistance and reinforcement. The proposed drainage method can realize the electroosmotic drainage in vertical and horizontal directions. Through layer by layer electroosmosis from bottom to top, the consolidation drainage effect of sludge in the lower layer can be enhanced by the increasing loading pressure from the upper sludge. After the vertical electroosmosis is completed, the method of exchange electrode is used to conduct horizontal electroosmosis in opposite direction.