As early as in the Neolithic Age, there were human activities in the area now we called Dayi.
The present Dayi county area was the ancient Shu capital in the Xia and Zhou Dynasty.
In the 5th year of King Shenjing of Zhou, also the 9th year of King Hui of Qin (BC 316), Qin destroyed Shu. The present Dayi county area was then Linq..