Abstract: The construction of the natural gas storage reservoirs is characterized by a large-scale, complex and multi-aim. therefore, it is necessary to make technical and engineering demonstration before its construction. In this paper, a grey integration analysis model is established and a quantitative assessment on different kinds typical design parameters is made. The optimal design scheme about the natural gas storage reservoirs is obtained. A practical example of natural gas storage reservoirs is given to examine whether this method is correct. From the model, it is concluded that the evaluation of integration scheme is more objective and practical than traditional method.