To finally realize the classification and sorting of agricultural products at a high speed even if increase in transfer speed is restricted due to intrusion of manual works.

The transfer end of a low speed transfer conveyer 52 of two crosspieces with each phase staggered is connected to a high speed transfer conveyer 1 so as to allow a transmigrating relay conveyer with the crosspieces to overlap the two conveyers, a receiving plate from the conveyer 52 is transferred via each speeded-up relay conveyer and is transferred by alternately transmigrating the same onto the conveyer 1, and the receiving plate on which the corresponding classified and sorted agricultural products are loaded is discharged to a storage conveyer 2 by a discharging device 201 for classification and sorting provided halfway the transfer of the conveyer 1. In addition, the classification is determined at a loading position in a transfer lateral direction of the receiving plate in the low speed transfer conveyer to read out the bar code of the receiving plate for determining the classification at outside in the transfer lateral direction.