There are multi-stages tectonic events and hydrocarbon accumulation happened in the superimposed basin, Western China, it is great of significant to study the hydrocarbon reservoirs formation, evolution and distribution in the superimposed basin. Superimposed Basin means the different types sedimentary basin or strata superimpose and overlap in the same geographic location at different stages, which has the three marked characteristics of discontinuous of sedimentary, structure and stress-strain. It can be divided into the following five types according to the chronologicage relation of structural section: successive sedimentation superimposed basin, strata superimposed at middle and late stage superimposed basin, strata superimposed at early and late stage superimposed basin, strata superimposed at early and late stage superimposed basin, and long term exposure superimposed basin. The complicated hydrocarbon reservoirs general developed which formed by three effects (erosion, faulting and folding) and six mechanisms (leakage, diffusion, spilling, oxidation, degradation and fragmentation). It can be divided into the following five types according to the genesis: Original hydrocarbon reservoirs, trap adjustment hydrocarbon reservoirs, component variant hydrocarbon reservoirs, phase transition hydrocarbon reservoirs and scale transformation hydrocarbon reservoirs. The study results show that the gas occurrence characteristics and distribution in the complex hydrocarbon reservoirs are very different between underground and surface. The hydrocarbon distribution is mainly affected by source kitchen, paleo-mountain, deposit facies, faults, tectonic events and regional caprocks, among them, the four major elements, source rock (S), Paleo-mountain (M), deposit facies (D) and regional caprocks (C) control the hydrocarbon accumulation and distribution, and build the hydrocarbon accumulation model which named multi-element matching (T-CDMS) for prediction for favorable hydrocarbon reservoirs area. Hydrocarbon reservoirs formed at early stage will be adjusted, reconstructed and destroyed because of multi-stages tectonic events, which mainly due to intensity of tectonic events, time of tectonic events, times of tectonic events, and caprocks properties when tectonic events happened, and thus established remaining resources potential assessment model of multi-stages tectonic events after hydrocarbon reservoirs formation, which can be used for prediction the remaining resources potential in the favorable exploration area. The formed hydrocarbon reservoirs show the late stage hydrocarbon accumulation effect after reconstruction, and the same time, facies and potential coupling controlled hydrocarbon reservoirs formation and distribution, the two functions can be used for prediction of the favorable exploration target and further more point out the potential favorable exploration target.