三角形中位线定理是初中几何的核心定理之一,其证明方法丰富多彩.通过对其不同证明方法的研究,让学生经历观察、操作、猜想、推理、交流等活动,有助于学生初步理解证明的必要性并实践证明,提升学生的理论思维水平. The theorem of triangular median line is one of the core theorems of junior middle school geometry, which proves that the method is rich and colorful. Through the study of its different proof methods, it is helpful for students to understand the activities of observation, operation, conjecture, reasoning and communication Prove the necessity and practice proved that enhance students’ level of theoretical thinking.