Abstract: An accessory box includes a bottom board defining therein a bottom receiving room with a front opening and a rear opening, a first side board integrally formed on a side of the bottom board, and a second side board integrally formed on a side of the bottom board to be opposite to the first side board. The second side board together with the first side board form a top receiving room on top of and communicating with the bottom receiving room. The top receiving room has a front opening and a rear opening both communicating with the top receiving room. A front board is integrally formed with a front side of the bottom board to cover the front openings of the bottom receiving room and the top receiving room. A rear board is integrally formed with a rear side of the bottom board to cover the rear openings of the bottom receiving room and the top receiving room.