The invention disclosed a password-sending-and-receiving device for logistics delivery and distribution by unmanned aerial vehicle (UAV), the technical scheme being the password-sending-and-receiving device. The device comes in two forms, the first form being the receiving end directly carries the authentication information for authentication, and the second form being that the receiving end obtains the authentication information through the network. In the first form, a password-sending-and-receiving device comprises three components: a Transmitter (10), an Authentication Service Information Server (20) and a Receiver (30) containing a Memory Module (31). In the second form, a Second Authentication Information Receiving Module (35) replaces the Memory Module (31). The Second Authentication Information Receiving Module (35) is connected to an Authentication Module (33), and is a wireless receiving module through wireless or wired network and can be used to receive authentication information sent by an Authentication Information Sending Module (22).