PURPOSE: To smoothly process a large quantity of deliveries by recording a delivery code and a delivery destination code corresponding to a delivery destination display or a delivery destination which become a pair each other by allowing them to correspond to each other at the time of unifying the delivery and a delivery display member.

CONSTITUTION: To an envelope 21 being a delivery destination display member, a label 24 on which a delivery destination display 22 for showing a delivery destination and a bar-code display 23 for displaying an ID number being a delivery destination code corresponding to this delivery destination by a bar-code are executed is stuck. In such a state, the delivery code and the delivery destination code corresponding to the delivery destination display 22 or the delivery destination which become a pair each other are recorded by allowing them to correspond to each other at the time of unifying the delivery and the delivery display member. In such a way, at the time of executing an integrated work, etc., of the delivery destination display member and the delivery, it is unnecessary to put the same code thereon, it does not occur that the processing work is interrupted due to missmatching, and the processing work can be executed smoothly and efficiently.