The invention relates to a material sorting system. The material sorting system mainly comprises central processing equipment, sorting sites and a conveying line, wherein the central processing equipment divides a sorting order into a plurality of sorting sub-orders according to the materiel storage of the sorting sites and distributes the sorting sub-orders to the corresponding sorting sites; thesorting sites are used for performing a sorting task; and the conveying line is controlled by the central processing equipment and used for bearing and conveying sorting boxes. Before materials are sorted, the sorting sub-orders, codes corresponding to the sorting boxes and the positions of the sorting boxes on a sorting frame are bound, the corresponding relationship between the sorting box codes and the sorting sub-orders is fed back to the central processing equipment, according to the corresponding relationship, the central processing equipment merges all the sorting boxes of the sortingsub-orders of the sorting order, al the sorting boxes belonging to the same sorting order are loaded to be conveyed to the designated place at one time or multiple times, and sorting work of the sorting order is completed. The material sorting system greatly simplifies the sorting work process, improves the sorting accuracy and efficiency, and can realize collaborative work of the multiple sortingsites.