In this paper, we propose an essential model to make and maintain pheoromone-like potential fields by using RF-ID. Some animals use special chemicals called pheromone to know and organize environments. By the proposed aglrithm, we realize the functionality of pheromone by using general RF-ID tags, which is small, wireless-communicable memories. In the contrast of chemicals, information stored an RF-ID does not develop by itself. We analysed virtual development of information stored RF-ID by mobile robots and give design of parameters.