During the period of Japanese rule, Guguan's hot spring was discovered by local aborigines.

[1] On September 11–12, 1937, Kinji Yamada found many ancient stone artifacts in the area.

[2] During the 1950s, Liu Jih-Wann also found many stone artifacts, which in that area created the Guguan Archaeological Site.

After the Nationalists came to Taiwan, they planned a route across the island, passing through Guguan, which would be the Provincial Highway 8.

[3] The 1999 Jiji earthquake caused massive damage to the highway, cutting the road in several sections.