Abstract: For the welding of complex parts or medium and thick base materials, the design and pre-processing of bevels can enhance the comprehensive mechanical properties of the welded joint, achieving single-sided processing and double-sided forming welding. Compared with unbeveled welded joints, beveled welded joints have a more uniform heat distribution and a smaller heat-affected zone area, which helps maintain the performance of the base material, and significantly reduces deformation and post-weld residual stress caused by heat accumulation. The influence of parameters such as bevel form, bevel Angle, and bevel size （bevel width and reserved clearance） on welding quality is systematically reviewed, the influence mechanism of bevel parameters on weld formation and residual stress is explained. The main challenges currently faced in bevel design and application are pointed out, and the future research directions in this field were prospected.