Changze County belongs to the Tibet Autonomous Region of the People's Republic of China, and is located in the northwestern part of Tibet, the eastern part of the Ali region, and the hinterland of the northern Tibetan plateau. East and Naqu city of Shuanghu, Nima County, southeast and Tsokan County, south and Rikaze City, Zhongba County adjacent to the west and Geji County, Ritu County border, north of the Kunlun Mountains as the border with the Xinjiang Uygur Autonomous Region. It is 450 kilometers long from east to west and 670 kilometers wide from north to south, with a total area of 135,580 square kilometers, and is the largest purely pastoral county in the Ali region by area, accounting for about 2/5 of the total area of the Ali region.In 2019, the registered population of Rezhe County was 26,735. As of 00:00 on November 1, 2020, the resident population of Reze County was 25,327 people. Reze County has 1 township and 6 townships: the town of Reze, the township of Muma, the township of Advance, the township of Mami, the township of Dongtso, the township of Gum, and the township of Chabu. There are 1 community and 49 administrative villages, and the government is located in Reze Township.In 2019, the total population of the county was 26,735. S301 and National Highway 216 (centered on the second line of the New Tibet Highway) pass through the county. On December 9, 2019, the People's Government of the Tibet Autonomous Region approved the withdrawal of Reze County from the poverty-stricken counties (districts). In 2019, the Gross Regional Product of Reze County was 742.59 million yuan, the added value of primary industry was 230.93 million yuan, the added value of secondary industry was 128.61 million yuan, the general public budget revenue was 50.30 million yuan, and the general public budget expenditure was 1,379.86 million yuan.