Tangyuan County, Jiamusi City is one of the 3 counties, resident Tangyuan Town. It is located in the northeast of Heilongjiang Province, on the western edge of Sanjiang Plain. It is close to the Small Khingan Mountains in the north and the Songhua River and Tangwang River in the south, between the coal city Hegang, the forest city Yichun and the port city Jiamusi.

Tangyuan County covers an area of 3420 square kilometers, with a forest coverage rate of 33%. The county has jurisdiction over 4 towns and 6 townships and 137 administrative villages. Guxian has 2 state-owned farms, 1 reform through labor prison and 1 forestry bureau Heli Forestry Bureau.According to the seventh census, the permanent population of Tangyuan County was 173,688 as of midnight on November 1, 2020.

Tangyuan County belongs to the middle temperate continental monsoon climate, four distinct seasons, changeable weather, hot and rainy summer, cold and dry winter, rain and heat in the same season, winter and summer temperature range is large. In Tangyuan County, there are Hajia, Jiahe and other railway trunk lines, G201 Heda Highway, G102 Beijing-Fu Highway (formerly S101 Hazhao Highway) and other highway trunk lines; Highway mileage within the territory of 1018.859 km. On May 5, 2019, the Heilongjiang provincial government approved Tangyuan County's removal from the poverty-stricken county list. Its gross domestic product (GDP) reached 8,659.14 million yuan, an increase of 6.1% over the previous year at comparable prices.