Yongan Village in Hepu plays an important role in the ancient Chinese coastal defense system, and its architectural relics embody profound historical and cultural heritage. In order to solve the continuous degradation of the natural environment and the impact brought by the rapid development of modern society, create a "culture-architectural relic space" that retains the cultural essence and adapts to the modern development, and promote its realization of the new era value, the work aims to select Yongan Village as a typical case for empirical analysis from the perspective of coastal defense culture. Through literature research, field investigation and other methods, the architectural relics and historical and humanistic elements of Yongan Village are summarized. The problems in the architectural relics of Yongan Village are clarified and the principles of cultural protection of the architectural relics of Yongan village and the specific spatial narrative development strategy are explored. It is expected to realize the regeneration of architectural relic genes and reshaping of historical space, so as to provide certain guarantee for the lasting preservation of architectural relic culture of Yongan Village in Hepu and other traditional villages.