Tainan is the earliest developed city in Taiwan.The traditional street house is a long and narrow street shop residence. It belongs to Taiwan's unique residential culture,and the two house holds share the wall. The front hall of the street is often used be a shop or business. The middle is the porch ,it’slink the back side the home. Therefore, I want to use the traditional streethouse to transform the void space, skylight,and share space with community, and join the urban art gallery, so that the street house has a new definition, and it is closer to the modern life .