Hulunbeier League is named after the merger of Hulun Lake and Bell Lake. In the west of its jurisdiction, Hulun Road under the jurisdiction of Heilongjiang Province in the early years of the Republic of China; The east belongs to Longjiang Road, Heilongjiang Province. During the occupation of Northeast China, it was divided into North Xing 'an Province and Dongxing 'an Province. 1947 merged into the newly established Inner Mongolia Autonomous Region in May. 1949, Hu Nameng was founded, belonging to Inner Mongolia Autonomous Region. 1 May, 954, Hu Na League and Xing 'an League merged to form Hulunbeier League, which governs three cities, 13 Banner and1County, and the people's government of the League is located in Hailar City. 1June, 958, it was changed to the Union Office, which is the agency of the People's Committee of Inner Mongolia Autonomous Region. 1967 65438+February, the office of the League was changed to the Revolutionary Committee of the League. 1On July 5, 1969, the Central Committee of the Communist Party of China and the State Council decided to put the Hulunbeier League (except Tuquan County and Horqin Right Wing Banner) belonging to Inner Mongolia Autonomous Region under the jurisdiction of Heilongjiang Province, including Hailar City, Manzhouli City, Zhalaite Banner, Arong Banner, Buteha Banner and Xiguitu Banner, and 12 counties. 1April, 970, Oroqen Autonomous Banner and Molidawa Daur Autonomous Banner were placed under the jurisdiction of Daxinganling area. 1 On May 30, 1979, the Central Committee of the Communist Party of China and the State Council decided that 1969 would restore the original administrative divisions of Inner Mongolia Autonomous Region, and since July1year, the Oroqen Autonomous Banner and the Molidawa Daur Autonomous Banner in the Hulunbeier League and Daxing 'anling region will be officially transferred to Inner Mongolia Autonomous Region. 1July 1980, the organizational system of Xing 'an League was restored, and the division of Hu Meng before April 1954 was restored.