Connecting piece for cabinet

The utility model provides a connecting piece for a cupboard, the connecting piece is an integral hollow aluminum profile and is provided with a top, a first side part, a second side part and a bottom, the top is provided with a flat surface, the first side part is provided with a first groove, the vertical distance between the first groove and the top is 1/3-1/2 of the distance between the top and the bottom, and the second side part is provided with a second groove. An L-shaped extending part extending outwards is further arranged at the end, close to the bottom of the connecting piece, of the second side part, a third groove is defined by the extending part, an opening of the third groove faces the top, and a mounting groove is formed in the bottom of the connecting piece. The first groove of the connecting piece is suitable for interference fit installation of the door handle, so that use of screws is avoided, and rapid installation of the door handle can be achieved. The third groove is used for accommod