The film curing of concrete protective layer in winter does not affect the strength growth. According to relevant data, covering plastic film is water-retaining and curing concrete, which is beneficial to the need of this chemical reaction. Plastic film can prevent water from evaporating, causing heat loss, and at the same time achieve the effect of heat preservation. When the ambient temperature around the concrete can cause the concrete to freeze during curing, it should also be covered with straw curtains and tarpaulins for thermal insulation. Prevent freeze-thaw damage of concrete.