This paper deals with the lacustrine sedimentary facies and the flora to reconstruct the Pliocene paleoenvironment in Yushe basin.Yushe basin is a dentritic saucer-like synclinal basin in eastern Shanxi Plateau. The flu-vio-lacustrine sediments of Late Conozoic, ranging from Pliocene to Early Pleistocene, are spread in the basin. This ancient lacustrine basin has been dissected into undulating hills due to subsequent uplift of the area. As a result, the Late Conozic Deposits are widely exposed. The fluvio-lacustrine deposits are grouped into the Yushe group which includes Lower Pliocene, Upper Pliocene and Lowre Pleistocene. It is worthy to note that the down-warped lacustrine basin exhibits various types of sedimentary facies.The paleobotany is commonly regarded as one of the most valid indicators for paleoenvironment. We have noted that a great number of Plant fossils was found which are seldom seen elsewhere. The pliocene flora were mainly Quercus, Area, Zolkova and Ulmus ect. All this indicated the warm temperature and monsoon climate at that time.The Early and Middle Pliocene formations contain seme representative plants, such as Magnolia. Liquidambar, Platycarya and Tsuga. etc. This Shows Yushe area was a forest landscape of northern subtropical zone at that time, but it had a tendency towards dry and cold climate different from the subtropical forest landscape of Miocene in Shanwang area.During Late Pliocene, Yushe area was a landscape of deciduous and broadleaf forest of warm temperature zone the vegetation was alike with the present one in the south of North China. The widespreading of fluvio-lacustrine and characteristic vegetation in Yushe Pliocene suggested that the climate belongs to monsoon climate with marked seasonal climate change from dry to humid and cold/warm seasonal alternation during a year.