Protective device with spraying and dust falling functions

The utility model provides a protection device with spraying and dust falling functions, which structurally comprises a plurality of protection plates surrounding the periphery of a protection area, protection stand columns and spraying connecting pieces, the protection stand columns are arranged between every two adjacent protection plates and are vertically arranged on the ground, the edges of the two sides of each protection plate are fixedly connected with the protection stand columns, and the spraying connecting pieces are fixedly connected with the protection stand columns. Water conveying pipelines are arranged at the tops of the protection plates, and the corresponding ends of the water conveying pipelines of every two adjacent protection plates are connected through spraying connecting pieces. The spraying connecting piece comprises two half Haff joint bodies which are oppositely arranged on the water conveying pipeline in a hooping and sleeving mode, sealing rubber pads are arranged on the inner con