The invention provides a vehicle group
navigation system, which comprises a vehicle-mounted navigation device and a
server, wherein the vehicle-mounted navigation device comprises a sub-communication module, an information input module, a navigation module, and an information output module, and the
server comprises a main communication module, a user account management module, and a group management module. The invention also provides a vehicle group navigation method, which comprises the following steps: a user utilizes a navigation device to register a user account on the
server to generate a corresponding or newly-built group number; then the user sets safety
verification information to complete the group establishment; then the user utilizes the
verification information to establish a group and activates the group; thus positions of each member and relative distances between each member are displayed in the maps in the navigation devices of each member in real time. The navigation method and
navigation system solve the problems that the
workload of the captain of a vehicle group is large and the
group efficiency is low; largely improve the
group efficiency and compactness, and are especially suitable for flexible group establishment.