Abstract: In order to quickly and intuitively grasp the freezing and thawing law of perennial permafrost slopes under the new type of frame anchor support,based on the hydrothermal coupling theory and considering the freezing and thawing law of perennial permafrost slopes,the coupled control equations of freezing and thawing consolidation of the new type of ventilated anchor-supported slopes are established under the consideration of the influence of the wind speed,and the corresponding discretization of the spatial domain and the temporal domain is carried out by means of the Galyokin method and the finite difference method for these control equations.The finite element software was compiled to establish a coupled hydrothermal model of a new type of frame-ventilated anchor-supported multi-year permafrost slope,and the reliability of the established model was verified by indoor model test.The model was used to calculate the new frame ventilated anchor support perennial permafrost slope,and the results show that:(1) Under the new frame ventilated anchor support,the temperature of the slope surface and around the anchor is obviously lower than that inside the slope,and the temperature distribution around the anchor shows a wavy line pattern;during the thawing period,the temperature of the slope surface is relatively higher,but the temperature around the anchor is still lower than that inside the slope.(2) After a long freeze-thaw cycle,the slope has unrecoverable deformation,and the deformation accumulates year by year.(3) During the freeze-thaw cycle,the axial force of the anchors shows a tendency of increasing and then decreasing,and the freezing force it suffers exceeds the thawing soil pressure.The calculation model can provide theoretical guidance for the design and calculation of new frame ventilated anchors.