The choice of curing agent on the preparation of waterborne epoxy floor coating is very important. Waterborne epoxy coatings for multiphase system, epoxy resin as the dispersed phase, curing agent for the continuous phase (for water-soluble curing agent). China epoxy resin industry association experts thought that the curing process is controlled by diffusion, curing reaction in the first place in the interface, the viscosity of epoxy particle surface increases gradually, at the same time curing agent gradually spread to the epoxy resin, to further make the epoxy resin curing. Curing epoxy emulsion particle size is smaller, the closer the completely; Curing agent has better compatibility with epoxy resin, curing agent, the more easily spread to epoxy resin, curing. Commonly used water curing agent have fatty amine adduct, alicyclic amine adduct, polyamide, polyamide adduct, etc. Aliphatic amine adduct and alicyclic amine adduct share period is short, fast curing rate, particle surface viscosity of epoxy rise too fast. Go against to epoxy curing agent particle diffusion depth, curing incomplete, film function is not ideal. Bad component mixing soluble polyamide curing agent with epoxy resin and induction period, with polyamide resin adduct can overcome this shortcoming. As the system of collecting with water soluble polyamide adduct curing agent, the curing agent of wet concrete base surface wettability is good, can discharge water curing. Even in the wet base also has a good function of curing, solved the solvent epoxy floor coating materials as the topic of the construction problems face wet.