A vehicle drive support system, and its method, includes a storage apparatus for storing charging station information to manage attribute information containing position information of charging stations, a communication apparatus for receiving a route search request containing an origin, a destination, and a residual quantity in a battery from a mobile and transmitting a response to the route search request, and a route search processing unit for searching a route passing through the charging stations while maintaining a state in which the residual quantity in the battery is greater than 0 between the origin and the destination by using position information of the charging stations contained in the charging station information in response to the route search request received by the communication apparatus, and giving the searched route as the response to the route search request.