River terrace is good carrier for the study of river evolution and tectonic movement. Although the Quaternary geology in Beijing area is highly studied, there are few relevant research data on river terrace in the east of Beijing. In this paper, the Juhe River, Huangsongyushi River and Jiangjunguanshi River developed in front of Yanshan Mountains, are taken as the research objects in Pinggu area, Beijing. Methods:The development sequence of the above- mentioned river terraces is divided in detail. On this basis, the formation times, terrace genesis and the response of river terraces to the uplift of the Yanshan Mountains are discussed by field geological survey and opto—luminescence dating (OSL). Results: It is considered that the Juhe River developed three terraces on the south bank and developed two terraces on the north bank. The Huangsongyushi River developed 6 terraces. The Jiangjunguanshi River developed 5 terraces. The Jiangjunguanshi River was formed no later than the late Middle Pleistocene (161. 7±7. 7 ka BP) and the Huangsongyushi River was formed no later than the early Late Pleistocene (121. 2±5. 4 ka BP~100. 3±4. 1 ka BP). The Juhe River was formed no later than the middle of the Late Pleistocene (79. 4±3. 3 ka BP~70. 8±3. 4 ka BP). The formation of the terraces of the Juhe River, Huangsongyu River and Junjiangguanshi River is influenced by paleoclimate change and the Yanshan Mountains uplift. The Yanshan Mountains in Pinggu area has been in a state of uplift since the late Middle Pleistocene, and the uplift rate reached the maximum in the early Late Pleistocene, up to 0. 24 mm/a~0. 34 mm/a, and decreased in the middle of the Late Pleistocene, to 0. 18 mm/a ~ 0. 24 mm/a.Conclusions: The above results have important reference value for the study of the development characteristics and formation times of river terraces in eastern Beijing, and also provide new evidences for the uplift of the Yanshan Mountains since the late Middle Pleistocene.