Fixed connecting device for prefabricated parts

The utility model provides a fixing and connecting device for a prefabricated part. The fixing and connecting device comprises a prefabricated part body, the bolt is fixedly connected to one side of the top of the prefabricated part body; the two first connecting rods are arranged at the bottoms of the opposite sides of the two prefabricated part bodies, and the top ends of the two first connecting rods extend to the tops of the prefabricated part bodies. According to the fixing and connecting device for the prefabricated part, the rotating assembly is rotationally connected to the connecting assembly, and the first clamping block and the second clamping block in the anti-rotating assembly are clamped in the first clamping hole and the second clamping hole respectively, so that the first nut can be limited to the fixing position of the bolt and is prevented from rotating; meanwhile, the connecting assembly also limits the positions of the two prefabricated part bodies, it is guaranteed that the two prefabrica