Yingwei fault zone is one segment in the Tan Lu Fault Zone offshore the Bohai Sea. There has been no much study about it due to lacking of the data. This study carried out systematical research on the fault zone’s special distribution, tectonic character and Cenozoic evolution with amount of exploration data of the Bohai oil field so as to understand the Cenozoic evolution of the whole Tan Lu fault. It can be concluded that the Yingwei Fault Zone contains two branches (the east and west branches) in the offshore Bohai Sea, and can be divided into three segments; the two branches have different tectonic manifestations, different evolution and also different control on basin evolution in different segments. During the Cenozoic, the Yingwei Fault Zone shows an evolutional process that the dextral movement played an important role in the Cenozoic basin evolution.