Abstract: According to site investigation on underground gas storages at home and abroad, issues existed in construction and operation of Dazhangtuo underground gas storage are studied and analyzed and 11 technical programs on surface engineering for the underground gas storage with gas condensate reservoir are presented. 10 research achievements obtained in executing the technical plans are given. For the "weakest plate effect" existed during the construction of underground gas storage, authors consider that the incorporated technology of the underground gas storage can provide an important engineering reference in building or opening the like underground gas storages and low-pressure hydrocarbon reservoir.