To provide an efficient collection/delivery system.

A delivery system 1 is composed of a user terminal 10 provided with a printer 11 for transmitting the delivery request of a parcel through a network 3 and outputting a delivery label to be stuck on the parcel, a collection/delivery managing center 20 for receiving the delivery request from the user terminal 10 through the network 3, returning code information for outputting the delivery label to the user terminal 10, preparing collection/delivery route information containing the code information according to the contents of the received delivery request and registering the information on a collection/ delivery database 21, and a collection/delivery vehicle terminal 30, which is loaded on a collection/delivery vehicle, provided with a bar code reader 31 for reading the delivery label and a car navigation system 32 for displaying the collection/delivery route and connected with the collection/delivery managing center 20 through the network 3, for receiving the collection/delivery route information registered on the collection/delivery database 21.