Concrete curing agent, also known as concrete protective agent and concrete curing liquid, is a new polymer preparation prepared by modern high technology. It is a liquid film-forming compound with wide adaptability. The product is water-based, non-toxic and non-flammable, and easy to use. When the curing agent is sprayed on the surface of concrete or mortar, when the water evaporates to a certain extent, it can quickly form a colorless and impermeable film, which can prevent the water in concrete or mortar from evaporating and reduce the shrinkage and cracking of concrete. One ton of curing agent can save 2000 tons of water.