在当前大学物理实验扭摆法测量物体转动惯量实验中，通常将“几何法”与“扭摆法”相互交织，导致实验过程逻辑混乱. 本文提出删除用“几何法”倒推“扭摆法”中弹簧扭转常数K 值这一环节，改用“定义法”直接测量K 值，从而将“几何法” 与“扭摆法”隔离，并重新设计了实验内容，使实验条理更加清晰.

In the current college physics experiment teaching，the experiment of measuring objects’processional moment by torsion pendulum method has some logical confusion because of the intertwining with the geometric method. This paper proposes that the definition method rather than the geometric method is directly used to calculate the torsion coefficient K. Then，this paper rearranges the experimental content and makes the process more clearly.