: By simulating the effects of stray alternating currents on the corrosion at damaged areas of pipeline coatings, the study investigated the influence of parameters such as AC current, soil conductivity, pipeline internal pressure, stress and distance to the grounding electrode, and pipeline radius on corrosion. The results indicate that when the stress on the pipeline is below the yield strength, the impact of stress on the corrosion from stray AC currents is minimal; however, increased deformation of the pipeline can lead to severe corrosion under stress. Greater AC currents result in higher corrosion levels at areas with pipeline coating defects. Lower AC frequencies are associated with increased corrosion at these defect locations. Closer proximity of the grounding electrode to the pipeline leads to higher corrosion levels at coating defects. Lower soil conductivity is correlated with increased corrosion at coating defects. Smaller pipeline radii are associated with higher corrosion levels at coating defects. These research findings provide essential scientific insights for ensuring the safe operation of petroleum and natural gas transportation systems.