Toucheng Old Street is the oldest street in Yilan, dating back to the Qing Dynasty. It was once the economic center of Yilan, but it's importance was later replaced. Now it sits as a monument to the past, with few changes as compared to its former glory. It's definitely worth a stop on your trip through Yilan. Before Chinese settlers came, the area around Toucheng was inhabited by the Ketagalan Aboriginal tribe, whose language is now extinct.

The name Toucheng literally means "first town" in Chinese, because it was the first settlement in Yilan, settled in the late 1700s. With the nearby Wushih and Touwei Harbors around the same time, it became the economic focal point of Yilan. However in the late 1800s and early 1900s Wushih Harbor and Touwei Harbor silted in, reducing their function.

With the advent of the Japanese built Yilan railway line in the mid-1900's, as well as constant floods and continually silting of the harbors, Toucheng Old Street quickly lost its importance economically and fell into decay.

The old street has two temples, the major one being Toucheng Qingyuan Temple which dates back to 1796.