Abstract: The Upper Permian source bed along the three geological cross sections across Bogeda foredeep, the southern margin of the eastern Junggar Basin, is characterized by high concentration of multi-source organic matter of dominant lower aquatic organisms and sapropelic or mixed sapropelic- humic types, with increasing maturity from (Jrumqi (poorly matured) to the east of Jimusaer (matured). Howev high maturity of Permiansourse rocks along the Sangonghe cross section is bably derived from local heating by igneous intrusion. Through biomarker fingerprint correlation, the authors believe that oil from Cangggou Group (T_1ch—P_2ch) and Jurassic in Santai - North Santai area has affinities th Permian source rocks (Lucaogou Formation) in Dalongkou.