Dulan County is located in the southeast corner of Qaidam Basin, which can be divided into two geomorphic types: Hanbuda mountain and Qaidam basin plain. Gobi, desert, valley, river and lake, hills, plateaus, mountains and other landforms are distributed in turn. Within the territory of Shaliu River, Tuoso River, Chaghan Wusu River and other rivers more than 40. It is a plateau arid continental climate with an average annual temperature of 2.7℃, the lowest extreme temperature of -29.8℃ and the highest extreme temperature of 33℃. The average annual rainfall is 179.1 mm.

It is one of the ten resource counties in Qinghai Province, with 2 national key cultural relic protection units, 9 provincial key cultural relic protection units and 1 county key cultural relic protection unit. In October 2017, the Qinghai provincial government agreed to remove Dulan from the province's poverty-stricken counties.
In 2019, the GDP of Dulan County was 4,041.52 million yuan, the added value of the primary industry was 1,476.31 million yuan, the added value of the secondary industry was 1,542.26 million yuan, the general public budget revenue was 175.59 million yuan, and the general public budget expenditure was 1,900.67 million yuan.

Dulan County, Haixi Mongolian and Tibetan Autonomous Prefecture of Qinghai Province. Located in the southeast of Haixi Mongolian and Tibetan Autonomous Prefecture of Qinghai Province. Dulan (Mongolian for "warm"). It is dominated by the Han nationality, with Tibetan, Mongolian, Hui and Turkish minorities. County people's government in Chaghan Wusu Town, from the state capital Delingha City 205 kilometers, the provincial capital Xining City 428 kilometers. The administrative area covers 45,270 square kilometers. By 2021, Dulan County has jurisdiction over 4 towns, 4 townships and 107 administrative villages. According to the seventh census, the permanent population of Dulan County was 68,273 as of midnight on November 1, 2020.