Abstract: Based on the experiments and some examples of actual engineering, the paper detail the physical, chemical and engineering characteristic of eolian sand. In addition, the paper analyzes the road usage performance that eolian sand is a kind of good road construction material in roadbed if we can design reasonably and adopt a suitable constructional technology. A lot of problems in the region need to be sesoheel in appling of eoliansand into rood construction where there is saline soil and no sand or stone.