Tumet Left Banner, Tuzuo Banner for short, is the banner of Hohhot City. Located in the central part of the Inner Mongolia Autonomous Region, between Hohhot and Baotou cities. The geographical coordinates are 40°26 '-40°56' north latitude and 110°47 '-111°48' east longitude. It borders Wuchuan County in the north, Toketuo County and Helinger County in the south, Hohhot City in the east and Tumet Right Banner in Baotou City in the west. The flag is 87 kilometers wide from east to west and 55 kilometers wide from north to south, with a total area of 2,779 square kilometers. Flag government in the town of Zasuqi, 48 km away from Hohhot city. According to the seventh census data, as of midnight on November 1, 2020, the permanent population of Tumet Left Banner was 263,131.

Located in the Inner Mongolia Plateau, the north of the mountain, is the middle of the big green mountains in the middle of the Yinshan mountains. It is a quasi-temperate continental monsoon climate, with an average annual temperature of 6.3℃ and annual precipitation of 400 mm. There are big Hei River, small Hei River, Shirausu River. Minerals include asbestos, coal, gold, limestone, graphite and so on. Beijing-baoding Railway, National Road 110, National Road 209, Provincial road 103, G6 Beijing-Tibet Expressway, S31 Hujun Expressway transit. The memorial site is Wulanfu former residence, Jia Li more former residence, Wanjia ditch Daqingshan anti-Japanese memorial site. Tourist sites are Hasu Sea, Lama cave called, Daqingshan Forest Park. The top 100 counties and cities in Western China.

At the end of the 13th Five-Year Plan, the GDP of the whole Banner reached 19.119 billion yuan, with an average annual growth of 3.6%. General public budget revenue reached 1.367 billion yuan, an average annual increase of 0.2%; Total retail sales of consumer goods reached 3.104 billion yuan, an average annual growth of 3.9%; The per capita disposable income of urban and rural permanent residents reached 38,190 yuan and 20,081 yuan respectively, with annual growth rates of 5.9% and 8.8% respectively. The total investment in fixed assets over the past five years was 21.5 billion yuan.