The invention provides a papermaking enhancer that provide enhancement, filtering assistance and retention assistance. The papermaking enhancer comprises a polyacrylamide dry strength agent, a dialdehyde compound, hydroxypropyl methyl cellulose, polyaluminum chloride, an alkaline material, sodium chloride solution, and water. The polyacrylamide dry strength agent and the dialdehyde compound are dissolved in the sodium chloride solution to form a polymer dispersion having suitable viscosity, which helps improve stability of the enhancer; the polymer dispersion and other components form a complex with higher molecular weight, and the complex helps evidently improve the effect of the enhancer to improve the strength of paper. Additionally, the papermaking enhancer provided herein can providemore papermaking technical adjustment space in terms of application of fiber materials, other papermaking aids, and fillers.