The invention discloses a concrete curing and coating device for building construction, which includes a vehicle-mounted walking device, a cleaning mechanism, a watering and curing mechanism, a power mechanism, a support frame, a coating roller, a baffle, a hinge block, an extension plate, an electric push rod and For the film protection device, the cleaning mechanism is located on the left side of the top of the vehicle-mounted running device, the sprinkler maintenance mechanism is located on the top of the vehicle-mounted running device, and the sprinkler maintenance mechanism is located on the right side of the cleaning mechanism. The present invention moves forward through the vehicle-mounted traveling device, and then presses one end of the film on the coating roller to the bottom of the pressing roller, and at this time, the film on the coating roller is flat on the road surface, so that the film covers the surface of the concrete and covers the surface of the concrete. After the membrane, the water can be collected in the film to prevent the loss of water, creating a self-curing environment, avoiding the phenomenon of dehydration of the concrete after the concrete is poured, and ensuring sufficient strength of the concrete.