It is crucial to choose the appropriate way in live-wire crossing construction. Closely centered on the issue of live-wire crossing method selection, three scale methods of 1-9, 10/10-18/2 and 9/9-9/1 in analytic hierarchy process (AHP) are compared, whose results showed that the scale method of 10/10-18/2 is better. Based on the improved AHP, the hierarchy model for live-wire crossing method was constructed. Finally, three live-wire crossing methods were comprehensive evaluated and calculated by taking a power transmission line construction as an example, which showed that the cableway crossing is the best.