Plume tracking has to deal with tracking strategy and geometrical design of sensors array. This research paper proposes a Priority base (PB) algorithm, modeling the insect behavior to localize the odor source and acquire better response from sensor array. The sensor array designed includes five gas sensors (three TGS 813 and two MQ2) and three temperature sensor used to track wind. The array in mounted on a movable platform Mokhtar [7] for tracking the plume and localizing the source.