A waterway switch device has a waterway mechanism, an execution part, an operation part and a transmission part. The waterway mechanism has a main body, and an inlet and a plurality of outlets are arranged on the main body. The execution part is mounted in the main body and has a moving piece, and at least the switch of the outlets to the inlet can be achieved through the relative movement between the moving piece and the main body. The operation part has a handle. The transmission part has a wire rope, one end of the wire rope is connected with the moving piece, the other end is connected with the handle in a transmission manner. The handle rotates relatively, and the wire rope is driven to move, and the moving piece can move relative to the main body.