Abstract: The Baise residual basin is characterized by the fact that it is an originally big sedimentary basin,and a small residual ones it's with high maturity source bcds,low thresheld depths shallowly buried reservoirs and prolific production in geological conditions,etc.Although the basin is small,it's exploration category is wide.There are various types of reservoirs in the five structural zones of the relatively explorated Tiandong Sag,and oil bearing areas are highly overlapped and connected.The study and analysis of the Baise residual basin gives a certain guids important to the oil and gas exploration in the small Mesozoic and Cenozoic basin in southern China.