Abstract: The shape and structure of the corner of the reinforced earth retaining wall are special,and the model is often simplified during the calculation process,making the part more prone to engineering problems than the straight part of the retaining wall.In order to explore the deformation characteristics of the different corners of the reinforced earth retaining wall,taking the bulging disease of the convex corner of a reinforced earth retaining wall as an example,the deformation and damage of the corner of the reinforced earth retaining wall are analyzed,and the finite difference software is used.FLAC3D simulates several common forms of convex corners,namely three types of corners:angle,right angle and round corner.The overall deformation,vertical deformation and horizontal deformation of the convex corner of the reinforced earth retaining wall are analyzed.Starting from the structural characteristics of the corner form,the reasons for the different characteristics of the three types of corner forms in the bulging deformation area at the corners are analyzed.The results show that the deformation of the reinforced earth retaining wall is concentrated on the retaining wall.The vertical deformation has a great influence on the development of the overall deformation.The maximum vertical deformation position of the three corner forms is different from the panel,and the rounding distance is the closest.The angle of the corner is centered,the right angle is the farthest; the 1/4-2/3 section of the corner wall is the bulging area,and the top of the wall is the camber area; in terms of overall deformation and horizontal deformation,especially in the panel shape In the horizontal deformation,the structural feature of the angled form makes it more advantageous in the diffusion of stress and strain,so that it has the smallest maximum deformation value among the three forms,that is,the folding angle is better than the other two forms in controlling deformation.Advantages,it is recommended to use it preferentially in engineering design.The numerical analysis results are in good agreement with the deformation law of the retaining wall revealed by the field deformation measurement results.The results can provide guidance for the optimization design of the reinforced soil retaining wall.