The product falls into the category cationic Dialkyl Diallylamine Quaternary Ammonium Salt Polyelectrolyte and can be totally dissolved in water in the form of molecular solution. Having strong cationic carriers and active adsorption carriers, the product can destabilize and flocculate suspension and soluble substances with negative charges by charge neutrality. It is effective over the PH range of 0.5~14. No toxicity, no flavor, and no odor. It is widely applied in such fields as water purification, demulsification, double-cell retention in papermaking, and elimination of anionic impurities in papermaking serosity by controlling the total charge quantity of the aqueous solution.