Abstract: Cathodic protection of gas transmission pipeline is a very important step of pipeline's corrosion control. To detect, trace and analyze the protective potentiometer are very necessary for determine the operating status and protection effect. Applying the computer-based methods to store and analyze the protective potentiometer data obtained can not only enhance the data's utilization rate, but also improve the veracity and time synchronization, which greatly reduces the laboring intension. This article mainly introduces the design conception and realizing methods for the management and analysis system of gas transmission pipeline cathodic protection potentiometer data, which sets an example for applying computer-based management system for the corrosion control of pipeline.