The invention relates to an organic polymer synthesis technique, in particular to a complex electron donor for drag reducer polymerization, belonging to the technical field of chemical industry. The complex electron donor is characterized in that polymerization monomers are added into an anhydrous oxygen-free reaction system, wherein the mixture ratio of laurylene to styrene is 10:1-1:10, or the mixture ratio of laurylene to octylene is 10:1-1:10; the cocatalyst is 0.1%-3% and is obtained by diluting triisobutylaluminum with a refined solvent, wherein the triisobutylaluminum is 20%, the normal heptane is 20%-50%, the rubber solvent oil is 20%-50%, the main catalyst is 0.005%-0.1%, and the complex electron donor is 0.01%-0.5%; and the reaction temperature of the system is -40-10 DEG C, the stirring process is carried out continuously, the reaction time is 24-188 hours, thus a sticky super high molecular weight polymer is obtained. The invention has the advantages of obviously improving the activity of the catalyst system, reducing the consumption of the main catalyst, reducing the consumption of other additives, and the like. In the process of production, the heat release of the catalysis system is uniform, and the process control is stable. By applying the complex electron donor of the invention to long-distance oil transmission pipelines, the pipeline transmission capacity is improved.