Connecting structure of combined sun shield

The utility model discloses a connecting structure of a combined sun shield. The connecting structure comprises a supporting plate, a connecting piece and a wing plate. Two wedge-shaped grooves are symmetrically formed in the two sides of the end, connected with the connecting piece, of the supporting plate, and openings of the two wedge-shaped grooves are oppositely formed. The connecting piece comprises a top plate, web plates and a rib plate, the two ends of the top plate are connected with the two web plates inclining oppositely, the rib plate is connected between the middles of the two web plates, screw holes are formed in the top plate, wedge-shaped inserting blocks are arranged on the outer side of the top plate and correspond to the wedge-shaped grooves, and the wedge-shaped inserting blocks are inserted into the wedge-shaped grooves in a matched mode. The screws penetrate through the screw holes in the top plate to be fixed to the supporting plate in a nailing mode, so that the connecting pieces are