If the reconstruction of regional cathodic protection for existing stations is only based on previous project design schemes and experience of similar projects, some facilities may not have sufficient cathodic protection and the potential distribution may be uneven. It may also cause stray current interference for buried steel pipeline around the station, affecting the normal operation of neighbouring cathodic protection systems. This paper carried out field feeding test in one of the stations. By changing the location of power energization point and feeding point, this paper analyzed the effect of output voltage, output current, location of energization point on the regional cathodic protection system. This paper also analyzed the effectiveness of sacrificial anode for regional cathodic protection, and found that after several years in service, the ground resistance increased and the sacrificial anode could not provide effective cathodic protection. Based on the feeding test results, it is proposed that power energization points and feeding points should be optimally arranged during the rectification of the cathodic protection system in the pipeline station region. It is also recognized that sacrificial anodes should be used cautiously in the cathodic protection system of the long distance pipeline station region. The research results can provide a reference for the reconstruction of cathodic protection system in the long distance pipeline station region in the future.