A position information sharing apparatus of a vehicle includes a communication circuit communicating with a server and a processor electrically connected to the communication circuit. The processor is configured to receive authentication information for sharing of position information of the vehicle from the server, using the communication circuit, to transmit the authentication information to an external device, using the communication circuit such that the external device which is a sharing target of the authentication information is capable of obtaining the position information from the server, and to obtain information within a preset range corresponding to the apparatus among the position information at a preset timing corresponding to the apparatus, from the server using the authentication information.