The invention discloses a powder subpackaging and loading capacity detection system which comprises a control unit, a plurality of sets of subpackaging units and sorting detection units matched with the subpackaging units, wherein each sorting detection unit is provided with a weighing module and a powder container, and powder of the subpackaging units respectively enter into the corresponding powder container; the initial capacity of the powder containers is same, and a lower powder pipe is arranged on the position, close to the outer wall, of the bottom of each powder container; a gear driving plate is arranged at the bottom of an inner chamber of each powder container; and the control unit controls each gear driving plate to rotate to push a certain amount of powder into the corresponding lower powder pipe according to the feedback of the weighing module. The powder subpackaging and loading capacity detection system solves the problems of powder subpackaging and loading capacity detection, realizes precision control of the whole process of production, loading capacity detection and record, and reduces the risks of errors caused by human operation and contamination introduced byhuman interference.