Abstract: Alternating voltage from the power frequency electromagnetic field of high-voltage transmission line will lead to AC corrosion of buried pipeline near the line, then shorten the service life of the pipeline. In the light of this problem, experimental study on coupling interference law of high-voltage transmission line on buried pipeline is carried out. Laboratory test devices are designed and established. Influence of voltage, current and height of power transmission line on induced voltage of pipeline is analyzed through experimental study, which can provide test foundation for summarizing interference law and research on corrosion mechanism of pipelines.