Boasting uniqueness and broadness, Xilinguole Prairie is a well known plain in the temperate zone. It is the most representative and diversified one among all natural prairies in China. Here is meadow grassland, the most gorgeous style of grassland in the world, and hungriness grassland which is characterized by transition into desert. Moreover, there are rare sandlot grass field, precarious grass beach, hypo-grown polar and birch forest, as well as retained spruce forest. Xilinguole Prairie came into being four or five thousand years ago. According to geological record, there used to be Torrid Zone and Sub-torrid Zone Forest Period in history. The dinosaur fossil excavated in Erlianhaote City proves well that the Prairie used to be a land of fascinating Torrid Zone landscape sixty or seventy thousand years ago. The physiognomy here is that of mid Inner Mongolia Plateau. It neighbors Daxing’anling Mountain Range in the east, and connects with Red Apex and Basalt Mesa in the south. The terrain is reduced from the east gradually westwards. Gashunwula Mountain in southeast has the highest altitude of 1699.6 meters while in the lower reaches of Xilin River it is 900-meter deep to the very bottom, constituting a natural fall of 800 meters. Xilin River divides the whole Prairie into two different parts. The south and the west feature basalt mesa dotted by small volcano pricks, displaying fantastic scenery of basalt plateau; the north and the east, as a part of Inner Mongolian Plateau, is characterized by hills and Tala distributing alternately with wind-made sand-belts in between. In a word, physiognomy of the Prairie is quite complicated, diversified, and unique. Vegetations on it are famous for their varied shapes and colors, adding mysticism to Xilinguole Prairie.