Introduced are 3 comparative options for She-Ning-Lan gas pipeline system,described are advantages and disadvantages of the options in detail separately,comprehensively assessed are safety,economy and ease of the options by using Analytic Hierarchy Process (AHP) and Option 3 is finalized as the best one,which is consistent with the option determined finally in design,verified is the applicability of Analytic Hierarchy Process (AHP) in similar option comparison and selection accordingly.It is suggested that in future design,based on the principle of "Safety first,Environmental protection prior,People foremost and economically affordable",designers shall adopt rational and scientific multiobjective decision-making methods to assess options from various aspects and ultimately determine the best option.