The utility model relates to the technical field of notebook computer supports, in particular to a rotary notebook computer bracket with an expansion slot, which comprises a base, a disc, a connecting rod and a supporting plate, the expansion slot is mounted on the back of the base, the expansion slot is connected with the base to form a U-shaped slot structure used for placing a multi-port converter, and the disc is arranged in the middle of the base. A positioning piece is mounted on the disc; one end of each connecting rod is rotationally connected with the positioning piece, and the other end of each connecting rod is rotationally connected with the supporting plate. According to the rotary notebook computer bracket with the expansion slot, the expansion slot is formed in the side, close to the base, of the supporting plate and is connected with the supporting plate to form a U-shaped slot structure, so that the problem of placement of a multi-port converter when a user uses a notebook computer is effectively solved. According to the design, the multi-port converter can be stably placed on the bracket, and the trouble that a user forgets to carry the multi-port converter or does not properly place the multi-port converter to cause loss is avoided.