The fault activity in and near Shengli Oil Field is studied in the light of steps and methods that are suitable for studying fault activity in plain area. The results show that Wuli-Yidu fault, Guangyao-Qihe fault and Chengzikou fault are active faults during the Quaternary. And we also discuss the active features of Wuli-Yidu fault and the marks of Quaternary active faults in and near Shengli Oil Field and so on.