Abstract: According to the increasing parallel or crossing conditions between AC electrified railway and buried pipeline system during pipeline operation,the influence of parallel spacing,parallel length and cross angles on the AC disturbance voltage was researched by laboratory pipeline experiments.The results showed that under the influence of AC stray current,there existed logic function relationship between the AC disturbance voltage of pipeline and the parallel spacing and length,and the AC disturbance voltage decreased with the increase of cross angle.The drawn conclusions can provide theoretical guidance for the drainage of AC stray current duing pipeline operation.