The Bakun phase, as one of most significant Chalcolithic cultures of Fars province attributed basic stage related to socio-economic transformation in early village societies of Iran. On the basis of varied archaeological researches regarding Bakun phase, revealed relatively homogenous culture on the whole of Fars and some its neighbors was characterized by Black on Buff painted ceramic assemblage. Northern Fars or Sarhad, as borderland, have had some social interactions between Kur River basin and surrounding regions during Bakun Phase. Rescue excavation at Tappeh Mehr Ali on the Eghlid district during two seasons in 2006 and 2008, uncovered evidences related to Bakun phase, which analysis of them is subject of the paper. The evidences monitor the cultural interactions, and also review Bakun stratigraphic sequences on Northern Fars.