Archaeological evidence of prehistoric cultures dating back 4500 years before present was found in Nangang Village in 1983.

[17] In 1944, the area was administered as Taisho Village (大嶼庄) (Ta Yu), Mōan Subprefecture (望安支廳), Hōko Prefecture.

[13]: 212 [11] The name also connotes seven beautiful things as the island's tourist attractions: the scenery, the seawater, local products, people's hearts, the geology, the architecture, and the history.

[13]: 314 On April 20, 2002, President Chen Shui-bian visited the island and delivered remarks on healthcare services in the area.

[18] On October 24, 2019, at around 8 AM, two sand smuggling ships from China with a total crew of twenty-eight were apprehended in the waters southwest of the township.