Upper Devonian and Lower Carboniferous lithostratigraphic units in the coastal part of Northeast B¾c Bé have been reviewed. Basing on the news materials collected during recent years, the Upper Devonian - Lower Carboniferous sediments in this region are divided into Con Voi and Phè Hµn formations, the first corresponds to the carbonate platform facies, and the second - slope facies. The boundaries of these formations are for the first time, determined in detail.