Abstract:The Loess Plateau is a distinct geographical region, where natural regionalization has always been of much controversy because of variation in understanding its primary vegetation. In order to construct vegetation in line with local conditions, based on the discrimination on the viewpoints(no forests in the loess Plateau, secondary grasslands, etc.) relevant to the vegetation property of the Loess Plateau, the paper further dealt with the natural zonation of the Loess Plateau by adopting modern vegetation evidences. After analyzing the regional differentiation of bioclimatic conditions and the vegetation zonal characteristics in the region, the author investigated the actual effects of the vegetation construction in history so as to fully illustrate the vegetation zonality. It is shown that the Loess Plateau might be regionalized into several different vegetation zones of forest and steppe for no homogeneity of its environment. The opinion that the zonal environment for forest growth is not possessed in the Loess Plateau is accordingly inadequate. So far as the north demarcation line for the forest zone is called forest line, the north demarcation line for the forest-steppe zone should be called tree line. The vegetation construction shouldn′t be confined to such a land use pattern as “the 28-word general plan” put forward by Zhu Xianmo. The objective reality of thin woods and sparse shrubberies in the forest-steppe zone should not be ignored. At last, some other issues deserving attention and research were also presented.