This study is trying to find the formation and changes of the town-houses with arcades in Di-Hwa Street, Taipei City. They are important heritage of Taiwan. Di-Hwa Street is one of the most traditional towns in Taipei, Taiwan. The town-houses with arcades are built side by side, and their beautiful facades are continued over 1 kilometer. The facades' style can be sorted out to 5 different styles. Building of town-houses was started from A.D.1851. And they had been consolidated in the 1930s and 1940s. The change of facades' designs corresponds to the history of the town's development.