Weining Yi Hui Miao Autonomous County, under the jurisdiction of Bijie City, Guizhou Province, is the largest ethnic autonomous county in Guizhou province. It is located in the northwest of Guizhou Province, bordering Yunnan Province on the north, west and south. With an area of 6,298 square kilometers , the county government is located in Caohai Town. It has jurisdiction over 6 subdistricts, 19 towns, 15 townships and 1 nationality township. According to the seventh census, as of midnight on November 1, 2020, the permanent population of Weining Yi Hui Miao Autonomous County was 1,280,116.

Weining Yi Hui Miao Autonomous County is open and gentle in the middle, low around, crisscrossing peaks and ravines, rivers running, is the "source of four rivers". It is a subtropical monsoon humid climate, with annual sunshine duration of 1812 hours, frost-free period of 180 days, annual rainfall of 926 mm, annual temperature difference is small, daily temperature difference is large, warm in winter and cool in summer, and the average temperature in summer is 18 degrees.

On December 6, 2019, it was selected as a pilot unit to promote the quality improvement of farmer cooperatives in the whole county. In 2020, the GDP of Weining Yi Hui and Miao Autonomous County reached 28.783 billion yuan.