This is a new type of polycarboxylic acid superplasticizer special polyether monomer innovatively designed at the molecular level. This product is suitable for the synthesis of water reducer products with higher requirements for water reduction rate, easy to use, cost-effective, flake appearance, good water solubility, stable aqueous solution, can be formulated into water products for sale, more convenient to use. compared with the ordinary water reducer on the market has a low dosage, high water reduction rate, good ease of change, has a certain early and strong effect.