Linkou County, a county under the jurisdiction of Mudanjiang City, Heilongjiang Province, is located in the southeastern part of Heilongjiang Province, in the northern part of Mudanjiang City, with geographic coordinates between longitude 128°10′-131°08′ east and latitude 44°45′-45°58′ north. The total area is 6688 square kilometers. Linkou County has a cold-temperate continental monsoon climate with significant seasons, four distinct seasons, short spring and fall, variable climate, warm and rainy summers, long, cold and dry winters, and relatively obvious local microclimates in mountainous areas. As of July 2019, there are 11 towns and 176 administrative villages under the jurisdiction of Linkou County. The county people's government is located in Linkou Town.In 2022, the total household population of Linkou County was 318,785. Linkou County is named after its location at the forested gorges of Zhang Guangcai Ling and Laoya Ling. Linkou County was founded in June, 1939, and in September, 1983, it became a county under the jurisdiction of Mudanjiang City. Linkou County is located in the transportation hub where Mudanjiang, Qitaihe and Jixi cities meet, with Hegang-Dalian Highway (201 National Highway) and Mujia Railway running through the north and south, and the provincial highway, Fanghu Highway, and Linmu Railway running through the east and west, and intersecting with the longitudinal 201 National Highway and Mujia Railway at the town of Linkou. Linkou County has been selected as one of the second batch of counties in the area of protection and utilization of revolutionary cultural relics, the fifth batch of demonstration counties (cities and districts) of the country to basically realize the mechanization of the whole process of production of major crops, and the advanced unit of the national family planning high-quality service in 2018-2020, etc. In 2011, the national 3A-level tourist attractions in the territory of Linkou County include In 2011, there were 4 national 3A-level tourist attractions in Linkou County, including the "Eight Women Throwing themselves into the River" Martyrs' Martyrdom Scenic Spot, Lotus Peak Tourism Resort, Ringshui River Thrilling Rafting Scenic Spot, and Linquan River Couple's Rafting Scenic Spot. In 2022, Linkou County realized gross regional product of 781,612,000 yuan, calculated on the basis of comparable prices, an increase of 3.2% year-on-year. Among them: primary industry added value of 333,000,000 yuan, an increase of 2.6%; secondary industry added value of 785,450,000 yuan, an increase of 0.7%; tertiary industry added value of 370,067,000 yuan, an increase of 4.2%. The structure of the three industries is 43:10:47.