Foraminifers and marine ostracods were discovered in the Yanghuzhuang section of the Yan-qing basin. They are mainly Evolutononion shanxiense Wang, Sinocytheridea impressa (Brady) etc. These fossils are very abundant in the Yanghuzhang section and widely distributed in Early Pleistocene strata of the Yuncheng basin of Shanxi Province, the Nihewan basin of Hebei province and the Beijing plain.On the basis of an analysis of the fossil composition, stratigraphy, magnetostratigraphy and sea transgression, the authors consider that the Yanghuzhuang section yielding foraminifers and marine ostracods may be correlated with the Early Pleistocene transgressive horizon in the Beijing plain and the Nihewan basin.