A system for managing traffic information on a platooning vehicle may include a platooning vehicle group classified into at least one or more small groups according to at least one or more stops and including at least one or more platooning vehicles configured to generate second driving information and to transmit the second driving information to the outside through the wireless communication network in preset time units, and a traffic information management server configured to receive the first or second driving information transmitted from the single driving vehicles or the platooning vehicle group and to manage the second driving information to generate and store traffic information on a platooning vehicle which is classified according to one or more stops, in the form of a database.