The moving downward of the upper bound of frozen soil with global warming caused the increase of thaw settlement of the soil around pile,weakened the negative frictional resistance,and finally adversely affected the long-term performance of the pile in permafrost regions. To study the influence of raising atmospheric temperature on the negative frictional resistance of piles,according to the data on No. 16 pile of the Chalaping Bridge,the temperature field of soil around the pile after 10,30,50 and 70 years was first predicted,and the corresponding negative frictional resistance of the frozen piles in these years was also analyzed by physical model tests that were conducted on the basis of simulated temperature field. The negative frictional resistance of frozen piles was 5.2 kPa, 2.4 kPa,and 2.0 kPa after 10,30,and 70 years respectively. It's indicated that the freezing force on the pile side decreased and the negative friction resistance of the pile increased 10 years later because of the influence of the pile and atmospheric temperature; the ground temperature decreased with the increase of the predicted period,making the freezing force increase significantly and the freezing force decrease gradually.