Chuxiong's human history is measured in millions, not thousands, of years. The Yuanmou Man fossils, discovered in 1965 by geologists, date to approximately 1.7 million years ago, making them among the earliest evidence of human ancestors in Asia. The fossils include two front teeth and a stone tool, suggesting early tool use.
The region's dinosaur fossils are equally remarkable. Lufeng County has yielded over 120 complete dinosaur skeletons since the first discoveries in 1938. Species found here include the Lufengosaurus, a 6-meter-long early sauropodomorph that lived 200 million years ago.
The Yi people have inhabited the Chuxiong region for over 2,000 years. According to Yi legends, they are descended from the ancient Qiang people who migrated southward. The Yi developed a unique hierarchical society with slave-owning traditions that persisted until the 1950s. Their written script, with over 1,000 characters, is one of China's few original ethnic writing systems.
During the Han Dynasty (202 BC-220 AD), the region was incorporated into Chinese administration. The Nanzhao Kingdom (738-902 AD) and Dali Kingdom (937-1253 AD) exercised control over the area, and the influence of Buddhism spread. The Ming Dynasty established military garrisons and encouraged Han Chinese settlement.
The salt mines of Heijing made the town one of Yunnan's wealthiest during the Ming and Qing dynasties. Salt was a strategic commodity, and the taxes from Heijing's salt wells funded regional administration.
In 1958, Chuxiong Yi Autonomous Prefecture was formally established, granting the Yi people self-governance within the People's Republic of China. The region has since developed its economy while preserving Yi cultural heritage. The annual Torch Festival has become a major tourism attraction, drawing visitors from across China and abroad.