The Japanese colonial regime began construction of the Chichi Line in 1921 in the course of the project to build a hydroelectric power station at Sun Moon Lake. The railway, today 29.7 kilometers long, is the only one in Nantou County.
民國十年，日本政府為興建日月潭水力發電廠，開始了集集線的修築，今天集集線全長二十九・七公里，也是南投縣境內唯一的一條鐵路。