The soil in the frozen soil area is susceptible to temperature due to its particularity, and the frost heave of the soil will warp and deform the pipelines laid in the trenches. To this end, in order to make the finite element analysis results more in line with the requirements of pipeline laying under a certain trench size, the ABAQUS software was used to establish a pipe-soil interaction model based on trench parameters, and the stress distribution law of the pipe under different trench size parameters was analyzed under the effect of frost heave. The pipe stress concentration phenomenon and the influence of various parameters on the peak stress of the pipe under the conditions of different surface temperature, pipe trench slope and widening margin at the bottom of the trench are compared and analyzed. Studies have shown that stress concentration occurs in pipelines in the frost heave area, transition zone and non-frost heave area. The middle of the frost heave area at the bottom of the pipe is a high-risk failure area, and the surface temperature has the most significant impact on the pipeline stress. The maximum Von Mises stress in the middle of the frost heave area on the top of the pipe increases with the increase of the trench slope, the maximum Von Mises stress in the transition zone and the non-frost heave zone decreases with the increase of the pipe trench slope. When the slope of the pipe trench is constant, the Von Mises stress at the junction of the transition zone and the non-frost heave zone is the largest, and it increases with the increase of the width of the trench bottom.