Abstract:Seaweed thatching roof is a traditional roof form of rural residential buildings in coastal areas. It contains the ecological wisdom of residents in specific coastal areas, and it also faces the dilemma of raw material shortage and construction skills loss. In order to meet the needs of the development of the times, its construction techniques are also undergoing evolution and optimization. Combined with field investigation and quantitative measurement analysis, the ecological wisdom of seaweed roof is analyzed from three aspects: chemical performance, physical performance and disaster prevention performance, the construction technology of seaweed roof is studied at different stages from three perspectives: traditional construction, modern repair and new technology innovation. This article strives to record and retain the construction technology of seaweed roof in China, explore the technical optimization to adapt to the new era, and provide reference for the protection and development of traditional seaweed houses.