The dissertation analyzed Architecture of Yan’an revolutionary from 30 years to 40 years in 20 Centuries architecturally. Based on the investigation on site and analysis of relative literatures, the paper acquired feature of Yan’an Architecture. The feature played a significant role on protecting the History、Art and Scientific value of Yan’an during the revolutionary period. Yan’an is not only the foothold of Chinese revolution but also the jumping-off place of Chinese revolution. It is also the import historical turning point of Chinese revolution. Yan’an, as a halidom of Chinese revolution, is a famous city because of historical contribution on the Chinese revolution. Lots of revolutionary site is representation of Heroism Spirit and Yan’an Spirit and spirit treasure of Chinese Communist and Chinese people. Centuries-old history and great contribution of Chinese Revolutionary history decided that cultural site of Yan’an must be plentiful and not be replaced. In conclusion, the red base building from 30 years to 40 years in 20 century in Yan'an has significant meaning of its history, culture, development and continuation. The red base building in Yan’an area has also become a major architectural feature and plays an important role nowadays . We should protect them better.