Bayan Wendul Sumu, belonging to the Inner Mongolia Autonomous Region, Chifeng City, Arukolqin Banner. East and Bayan Tohai town as a neighbor, south and west with the Xini River West Sumu border, northwest of the border with Chenbalhu Banner. The geomorphologic form is dominated by low mountains, plains and diffuse hills. Bayan Wendul soum area of 4141.8 square kilometers, population of 15,118 people, the soum government stationed in Haila Sutai. "bayan wendul" is the Mongolian language, meaning rich plateau. in June 1956, han sum (temple) nu tuk (district) alteration of han sum (temple) sum, and sub-built ba yi wendul sum, to the territory of the ba yi wendul mountain named ba yi wendul sum. As of June 2023, Bayan Wendul Sumu jurisdiction 23 gacha.