It is named because there are two rivers in the territory. Located in the southeast of Gansu Province, at the junction of Shaanxi, Gansu and Sichuan provinces, it belongs to the Jialing River system in the upper reaches of the Yangtze River, bordering Tianshui in the north, Huixian in the west and Baoji and Hanzhong in Shaanxi in the southeast. Area 1408.73 km2, population 50429. It governs 3 towns and 9 townships, 1, 654,38+0.8 administrative villages.
Known as "the barrier of Qinlong and the throat of Bashu", liangdang county has successively won the titles of National Civilized County, National Greening Model County and National Ecological Garden County.