Making use of fracturing and water-bearing structure of rebuilding und erground gas storage is very important to guarantee safe and balanced air feed t o Jing, Jin and Ji regions. Though having developed basic research on the sand a nd pore structure, it doesn't apply the water-bearing structure as accumulating   and penetrating space, especially it exists obvious discrimination on the capaci ty calculation and it needs the further evaluation. on the prediction basis of t he model of burial hill, the paper proposes a prediction model to describe the c apacity in the fracturing and water-bearing structure as underground gas storag e . Through examples of the prediction model, the paper obtains that the height of  the secondary gas-cap increases and the capacity of gas storage also gradually   increases along with the decline of the interface of gas-water, the alternation   of the capacity of gas storage is deeply correlated with the buried depth of the  volume of burial hill.