云南是一个多民族的高原山区省，又是经济不发达的地区之一的，全省面积有39．4万平方公里，其中山地和高原占94％，有17个地州市，127个县（市、区），4000万人，平均人口密度为90人／玉方公里，有8个民族自治州，27个民族自治县，除汉族外，有白、哈尼、傣、苗等24个民族，人 Yunnan is a multi-ethnic plateau mountainous province and one of the economically underdeveloped regions. The province covers an area of ​​394,000 square kilometers, of which 94% are mountains and plateaus. There are 17 prefectures and 127 counties. (municipalities and districts), 40 million people, with an average population density of 90 persons/km2, including 8 ethnic autonomous prefectures and 27 ethnic autonomous counties. Besides the Han nationality, there are 24 ethnic groups such as Bai, Hani, Yi, Miao and others.