The town of Tadotsu was used to cultivate rice from the Yayoi period, and in the Middle Ages the Kagawa clan ruled the Nishisan district as its home base. In the year of Genko 7 (1694) Tadotsu Domain was born with Kyōkō Takadō as the first feudal lord. Tenpo 9 (1696) Since the foundation of Tadotsu Port was laid during the time of the 5th feudal lord Takaku, it has flourished as a port of call for Kitamae and a ship-site for Kinhira-sari. It introduces the history of the town, which flourished as the birthplace of modern industry and as the gateway of Shikoku since the Meiji era.

Daishido, located in the Okunoin, is the site of the birth house where Tamayori Gozen (Tamayori Gozen) is said to have given birth to Kukai, a master of Hiroho Daishi. It is also the first Shingon sect's main site, when Kukai was opened after Shushu from the country of Tang. It boasts a site area of 80,000 tsubo and is a rare temple with its precinct facing the sea. It is crowded with sea bathing and barbecue in summer. "Mandarazono", where you can enjoy the seasonal nature with flowers (hydrangeas, bamboo, cherry blossoms, hagi, etc.) collected from all over Japan, is also attractive. A large number of followers from all over the country gather at Homa, which is held from 10 o'clock on the 28th of each month. The 18th dasho, the 18th dasho, the 36th, the 36th, the 31st dasho, the 31st dasho, and the Sanuki 12th Shreiba Unen-nen, the main son of the Buddhist temple.

This land's billionaire, Wakimichi Takashi, carves a statue of Yakushi Nyorai in order to feed a fallen nanny with an arrow released; later, Hiroho Daishi carved a statue of Yakushi Nyorai, and then put a statue in the womb to the main statue; famous for his eye-eyed oyster.