Aohan belongs to a flag under the jurisdiction of Chifeng City, and does not belong to any other county.

Aohan Banner is located in the southeast of Chifeng City, Inner Mongolia, south and Liaoning Province, bordering Tongliao City in the east, 130 kilometers away from the port of Jinzhou, is the nearest flag county in Inner Mongolia from the sea. The flag has a total land area of 8300 square kilometers, jurisdiction over 16 townships and townships SuMu, 2 street office, 2021 year-end total population of 448,712 people.

Aohan Banner ecological construction is well known, known as "green Aohan". The flag has a forest area of 6 million acres, forest coverage rate of 44%, artificial pasture preservation area of 1.25 million acres, is "the first county of national artificial afforestation", "the first county of national artificial grass planting", "the national ecological construction demonstration zone

Topography and geomorphology of Aohan Banner:

Aohan belongs to the transition zone from Yanshan Mountain to Xiliaohe Plain, and the terrain is irregular and gently sloped, gradually tilted from southeast to northwest. Geomorphological types from south to north for the southern Nuruerhu Mountain stone low hills, central loess hills and northern sandy Tuodian area.

Southern mountains and central hilly area are 34% of the total area of Aohan. The northern sandy heap area accounted for 32%, including the middle and lower reaches of the Callai River, Mengke River, the old Ha River one or two terraces for the river along the plains area, flat terrain, fertile soil, rich in water, is Aohan's main grain-producing areas.