PURPOSE: To enable switching the packing between corrugated paperboard boxes of different standards A, B in an easy, simple manner by a method wherein, with respect to a packing box-feeding conveyor by which a corrugated paperboard box of a certain standard A is fed to the packing device for the packing with graded fruit after weighing, the feeding of the container can be switched to the use of a different packing box-feeding conveyor by which a corrugated paperboard box of a different standard B is fed.

CONSTITUTION: In the use of an automatic packing device 2 which packs a corrugated paperboard box of a certain standard A with graded fruit taken out from a fruit grader 1 after weighing, a graded fruit-packing apparatus is equipped with a packing box-feeding conveyor 4 which is capable of feeding, to a packing box conveyor 3 which feeds the corrugated paperboard box A to the automatic packing device 2, a corrugated paperboard box B differing in standard from the corrugated paperboard box A by switching.