Abstract: This paper characterized the monitored ground temperature of the frozen soil embankment with riprap slope protection and the normal embankment in Qingshuihe test section along Qinghai-Tibet railway.The ground temperature data inside the embankment and at the bottom of base were compared for these two kinds of embankment.The results showed that the experimental embankment with riprap protection performs better in lowering temperature,lowering minus accumulated temperature and reducing maximum thawing depth than the common embankment.Therefore,the embankment with riprap slope protection could provide permafrost protection by effectively decreasing ground temperature.