A system and method of processing traffic information using blockchain technology is disclosed. The method includes collecting traffic information by a first vehicle, updating a first block using the collected traffic information by the first vehicle, sharing a verification target block corresponding to the updated first block in a network by the first vehicle, verifying the shared verification target block by at least one second vehicle present in the network, and sharing a second block including the updated traffic information in the network when the verifying is successful by the at least one second vehicle.