Moisturizing and maintaining device for prefabricated hollow slab beam

The utility model discloses a prefabricated hollow slab beam moisturizing and maintaining device which comprises a water tank, supporting legs and a weeping pipe are arranged at the bottom of the water tank, a long-strip-shaped water outlet hole is vertically formed in the side wall of the weeping pipe, an adjusting cap used for adjusting the opening degree of the water outlet hole is arranged at the lower end of the weeping pipe in a sleeved mode, and the adjusting cap is in threaded fit with the weeping pipe. A tank cover is arranged at the upper end of the water tank. The geotechnical cloth is always kept wet in a continuous water dripping manner, so that shrinkage cracks caused by too fast evaporation of moisture on the surface of concrete due to direct sunlight and too large sand wind are avoided, cracks caused by too high temperature rise in the daytime and shrinkage due to temperature reduction at night are prevented, and the generation of micro cracks is effectively inhibited, so that the quality of t