在電化學鑽孔加工過程中，陽極工件會隨著加工時間而使得外型不斷演變，直至得到所需的加工外型，在模擬上，陰極刀具的進給與陽極工件外型的演變皆會產生移動邊界的問題。本文利用等位函數法來解決移動邊界的問題，模擬陽極工件外型隨著陰極刀具的進給時，工件外型的演變，並探討各種刀具類型、工作電壓與刀具進給速度等…對陽極工件外型的影響。結果顯示在不發生撞針的情況下，越小的工作電壓與越快的刀具進給速度可得到越好的加工外型。 In the electrochemical drilling (ECD) process, the shape of the workpiece would keep changing until the final shape had been reached. However, the feeding rate of the tool and the evolution of the workpiece would result in moving boundary problems in numerical analysis. Therefore, this article used the level set method to solve moving boundary problems. Finally, the influence of different types of tools, working voltage, and the feeding rate on ECD processes would be discussed. The results could be obtained that the smaller working voltage and the faster feeding rate would get the better shape of the workpiece.