Abstract: This paper mainly concerns the phenomena of structural overlapping, the time and order of overlapping deformation, the process of structural overlapping and the relationship between the types of overlapped structures and hydrocarbon accumulations in Eastern Sichuan. It holds that the complex structural features in Eastern Sichuan were formed by overlapping of two structural deformations. The first one took place in late upper Cretaceous and the second in Himalaya tectonic cycle. In exploring for oil and gas, attention should be payed to the types of overlapping and cross-overlapped structures which were formed by overlapping of two periods of positive structures, especialy to the overlapped structures similar to Wolong River structure which has very good cap rocks.