Abstract: On the basis of analyzing design objective of gas storage scheme for city gas comprehensively, firstly evaluation indexes are classified into three types according to their attributes, that is technology, economy and society consisted of 1 1 indexes, hierarchical process is used to determine the weight of evaluation indexes; then, individual index of every scheme involved in gas storage scheme is scored based on regulation, subjection degree of individual index subordinated to evaluation level is determined through " mountain-shaped " subjection degree function; and finally, fuzzy comprehensive evaluation method is used to determine optimal gas storage scheme for city gas.Demonstration from a case shows that the fuzzy comprehensive evaluation method is objective with accurate calculation results.It is considered that this method provides an application base in design optimal selection scheme of gas storage scheme for city gas.