Many whiskery white crystals and amorphous white patterns have appeared on surfaces at the Lidu wine-brewing workshop site. Soil within the region of whiskery white crystals is severe loosened, but there is no obviously loosened earth within the region of amorphous white patterns. According to x-ray diffraction (XRD) analysis, the whiskery white crystals are basically magnesium sulphate hydrate, and amorphous white ones are mainly calcium sulphate hydrate. A massive repeated change in volume between hydrated and dehydrated magnesium sulphate dehydration is the major cause of soil decay. Soluble salt analysis results indicate that the high salinity of the site is due to the alcohol making process. The research provides information helpful for future conservation.