Three-dimensional composite drainage network connecting device

The utility model discloses a three-dimensional composite drainage net connecting device which comprises a connecting assembly and multiple layers of drainage structures, the connecting assembly comprises connecting strips which are oppositely arranged, the multiple layers of drainage structures are arranged between the connecting strips in an overlapped mode, and the two sides of each layer of drainage structure are connected with the surfaces of the connecting strips. The connecting structure further comprises a plurality of fasteners penetrating through the connecting strip, and limiting parts are further arranged at the two ends of each fastener so that the fasteners can be fixed to the connecting strip. The three-dimensional composite drainage network connecting device is reliable in connection, factory manufacturing, assembling and fixing are facilitated, vertical alignment of the three-dimensional composite drainage network is facilitated, and the situation that drainage is affected due to the fact tha