A parcel sorting system, comprising a parcel sorting device and a parcel collecting device, wherein the parcel sorting device is provided thereon with a plurality of parcel checking inlets and a plurality of parcel outlets, wherein the parcel collecting device is located just below the parcel sorting device; and the plurality of parcel outlets are located at positions except edges of the parcel sorting device; and the parcel collecting device is provided thereon with storage devices, with one storage device located at each of positions under parcel outlets, wherein each of the plurality of parcel outlets on the parcel sorting device are respectively in communication with a corresponding storage device on the parcel collecting device and, during parcel sorting, the parcels to be stored enter the parcel collecting device arranged below just by passing through the parcel outlets, an opening size of the storage device being greater than an opening size of the parcel outlets, wherein each of the parcel checking inlets is provided with one parcel information acquisition device; the parcel checking inlets are in one-to-one correspondence with the parcel information acquisition devices, the parcel information acquisition devices are configured to acquire parcel information of the parcels to be sorted that enter the parcel checking inlets corresponding to the parcel information acquisition devices, and the parcel information contains destinations of the parcels to be sorted, wherein the system further comprises a control device, and the control device is in connection with all the parcel information acquisition devices so as to obtain the parcel information acquired by all the parcel information acquisition devices, to obtain the destinations of the respective parcels to be sorted; and the system further comprises a plurality of mobile transport devices, the mobile transport devices are all in connection with the control device, the control device is pre-provided with parcel outlets respectively corresponding to different destinations, and the control device is further configured to control, according to the obtained destinations of the parcels to be sorted, at least one of the mobile transport devices to transport the parcels to be sorted to the parcel outlets corresponding to the destinations of the parcels to be sorted. the plurality of parcel outlets are located at positions except edges of the parcel sorting device; and the parcel collecting device is provided thereon with storage devices, with one storage device located at each of positions under parcel outlets, wherein each of the plurality of parcel outlets on the parcel sorting device are respectively in communication with a corresponding storage device on the parcel collecting device and, during parcel sorting, the parcels to be stored enter the parcel collecting device arranged below just by passing through the parcel outlets, an opening size of the storage device being greater than an opening size of the parcel outlets, wherein each of the parcel checking inlets is provided with one parcel information acquisition device; the parcel checking inlets are in one-to-one correspondence with the parcel information acquisition devices, the parcel information acquisition devices are configured to acquire parcel information of the parcels to be sorted that enter the parcel checking inlets corresponding to the parcel information acquisition devices, and the parcel information contains destinations of the parcels to be sorted, wherein the system further comprises a control device, and the control device is in connection with all the parcel information acquisition devices so as to obtain the parcel information acquired by all the parcel information acquisition devices, to obtain the destinations of the respective parcels to be sorted; and the system further comprises a plurality of mobile transport devices, the mobile transport devices are all in connection with the control device, the control device is pre-provided with parcel outlets respectively corresponding to different destinations, and the control device is further configured to control, according to the obtained destinations of the parcels to be sorted, at least one of the mobile transport devices to transport the parcels to be sorted to the parcel outlets corresponding to the destinations of the parcels to be sorted.