Jianchang County, subordinate to Huludao City, Liaoning Province, is located in the northwest of Huludao City, bordering mountains and Xingcheng City in the east, Suizhong County in the south, Lingyuan City in the northwest, Qinglong County in Hebei Province in the southwest, Kazuo County and Chaoyang County in the north, with a total area of 3195 square kilometers. In 2019, Jianchang County will have jurisdiction over 7 towns, 21 townships and 1 economic zone. According to the data of the seventh population census, as of 00:00 on November 1, 2020, the permanent population of Jianchang County is 453436.

Jianchang has a long history and rich natural and cultural landscapes. The world's earliest feathered dinosaur "Heshi Nearosaurus" fossils dating back to 160 million years have been found in the territory, and the oldest mammal "Chinese Jurassic" fossils have been found so far; Shanzuizi Hongshan Cultural Site is as famous as Niuheliang Hongshan Cultural Site; The excavation of the Warring States Cemetery in East Dazhangzi, Jianchang, Liaoning Province, broke the statement that "there are no historical sites in the Spring and Autumn Warring States Period outside the Shanhaiguan Pass", including Bailang Mountain, a national nature reserve, Daqingshan Mountain, the ridge of western Liaoning, Longtan Grand Canyon, "a small Tibet in the north", etc.

In 2018, Jianchang County achieved a GDP of 7.77 billion yuan, including 2.03 billion yuan, 1.71 billion yuan and 4.03 billion yuan for the primary, secondary and tertiary industries respectively. The proportion of the three industries in the GDP was 26.1:22.0:51.9, and the per capita GDP was 14866.8 yuan.