A large amount of hydration heat will be generated within a few days after concrete pouring, which will increase the internal temperature of concrete, which may cause a large temperature difference between inside and outside, leading to cracks in concrete and need to be cured. Generally speaking, sprinkling water is enough. Steam curing is generally used in winter, because there is no watering condition in winter. Surround the poured concrete with some materials, and use some appliances to generate steam to ensure the curing effect.