Abstract:The numerous earthen sites along the Silk Road of China have different environmental conditions,whose deteriorations are mainly divided into two types in terms of their locations:the unsheltered ones suffering from wind and rain erosion and crevasses,and the sheltered ones suffering from the pollution,efflorescence and crevasses. This paper studies the consolidation and conservation of the Jiaohe Ruins in Turpan,analyzing the earthen samples taken before and after consolidation with PS materials by X-ray diffractometer,measuring the degrees of crystallization and testing them with scanning electron microscopy and transmission electron microscopy. This paper also discusses the mechanism of the earthen sites consolidated with PS materials,and proposes the following conservation methods:chemical consolidation method against wind and rain erosion to earthen sites with PS as the consolidating materials;consolidation method combining bamboo-steel composite anchor and crevasses grouting for dangerous soil masses;and consolidation method associating back-filling and patching-up for the eroded parts of the earthen sites. These consolidation methods provide a key to the main problem of the arid earthen sites basically;and they are practicable and applicable.