In archaeological excavation sites, it is often difficult to extract extremely fragile cultural relics and move them to laboratories. First of all, cultural relics must be reinforced temporarily before being relocated. In recent years, new revolutionary types of volatile solid materials for temporary reinforcement, such as menthol and cyclododecane, etc., have been successfully applied in some excavation sites. However, there are still some issues to be addressed. For example, can these materials be used in highly moist archaeological sites? How is their working performance？ In this study, in terms of the working properties of the materials, and the construction technology and safety of cultural relics, menthol, coumarin, ethyl maltol and cyclododecane were selected as materials for study in a small field experiment carried out at the Liangzhu work station of the Cultural Relics and Archaeology Research Institute of Zhejiang Province. This work could serve as a reference for archaeological or conservation workers who wish to select suitable temporary reinforcement materials to extract extremely fragile cultural relics in moist excavation sites.