Yingmai32 well area in the western part of North Tarim uplift has experienced tectonic movements for many times, which led to serious formation denudation and faults development. Directed by“Three Classifications, Three Subjects”, the article deeply analyzed the tectonic evolution and styles of Cambrian-Ordovician faults combining with the main tectonic movements of Tarim basin and North Tarim uplift and the actual geologic conditions. We have found that there are three periods of the Cambrian-Ordovician fault: the late Caledonian fault, the Early Hercynian faults and late Hercynian faults. Meanwhile, the two periods of Hercynian faults kept active until Cretaceous. Cambrianrdovician faults in the work area are mainly strike-slip faults and thrust faults, which promoted the interphase development of swell and concave within the buried hill and form many fault styles including flower-like fault, back thrust fault,imbricate thrust fault and so on. By summarizing the features of the faults and the distribution of oil and gas, we concluded that the high positions of positive flower-like faults are the best places for oil accumulation.