The physical and mechanical characteristics of frozen soils are closely related to the temperature.The distribution and evolution law of a ground temperature field in a permafrost roadbed under climate warming does not only affect the static stability of embankment,but also affects the response characteristics and stability under dynamic loads such as earthquake and vehicle loads.Based on the field-measured temperature of roadbed slope,the distribution and evolution law of the ground temperature field in the permafrost roadbed of the Qinghai-Tibet Plateau under climate warming is systematically simulated in this paper.The results show that the difference of the freezing index of the shallow soil on the sunny-shady slope is more obvious than that of thawing index.The freezing index of the shady slope is about twice that of the sunny slope for the two embankments,while the melting index of the shady slope is about 0.83 times of that of the sunny slope.The seasonal freeze-thaw process of the roadbed body and the active layer at sunny- shady slopes do not correlate.The maximum difference in the freezing-thawing period of the two slopes can be as much as one month for the roadbed in ES orientation.After the roadbed construction, the artificial permafrost table beneath the shady slope has a certain uplift under the three orientations.While beneath the sunny slope,the artificial permafrost table only uplifts for the roadbed in NS orientation.Then,because of the climate warming and the significant heat absorption of asphalt pavement,the artificial permafrost table declines quickly both under the sunny and shady slopes,and the maximum decline rate can reach 20 cm/a.With the decline of the artificial permafrost table,thawed bulb develops within the permafrost subgrade.The thickness of the thawed bulb is greater beneath the sunny slope than beneath the shady slope,with a maximum difference of 2.5 m.The seasonal freezing-thawing process of roadbed body and the artificial permafrost table buried depth and asymmetry of temperature field distribution should be considered in future designs and studies on the static and dynamic stability of the permafrost roadway embankment.