Naphthalene-based superplasticizeris a concrete water reducer chemical synthesis product of naphthalene sulfonic acid-formaldehyde condensate. It uses industrial naphthalene, concentrated sulfuric acid, formaldehyde and alkali as the main raw materials. Adding naphthalene sulfonate SNF to concrete can not only improve the strength of concrete, but also improve its various properties, such as abrasion resistance, corrosion resistance, permeability resistance, etc.