Abstract: Using structural life cycle method,storage construction process is divided into four stages:the planning stage,the analysins stage,the design and implement stages,the operation stage and the maintenance stage,which make the tasks of each stage clear.Based on the data from library database divided into three categories(restorable data,unrestorable data,core data)and the demand list of store designed in this paper,the store demand of library is expressed clearly and completely.The grading backup s...