The papermaking retention and filtration aid is categorized into the product of acrylic ester polymer, which is the water-soluble linear polymer. The product is with low viscosity, and favorable fluidity, existing in the form of high concentration of suspended liquid instead of gel products. It is convenient to be diluted , to avoid the poorly dilution of solid polyacrylamide dilution ,which will improve the retention characteristic and the quality of the paper. The performance of product is stable, reliable, and the application effect is remarkable. It is suitable for the wide range of PH value and can be used as dual retention combining with AKD, ASA in papermaking technology.