The utility model belongs to the technical field of document classification equipment. The automatic sorting equipment for the contract documents comprises an archiving operation unit, the archiving operation unit comprises a conveying unit, a code scanning unit and a sorting unit, the conveying unit comprises a conveying belt with the hollow middle and a driving assembly of the conveying belt, and the code scanning unit and the sorting unit are sequentially distributed in the conveying direction of the conveying belt; wherein the sorting unit comprises a sliding rail assembly, at least two material receiving boxes and a pressing part; the PLC electrical control unit is electrically connected with the driving assembly, the sliding rail assembly, the pressing part and the code scanning andreading unit; and the informatization control unit is in communication connection with the PLC electrical control unit. Through the arrangement, the contract documents can be quickly classified and archived, the archiving efficiency is high, and the defects that errors are prone to occurring in manual sorting and the like are overcome.