1. A numerical analysis data creating method for creating, by a computer, numerical analysis data that are obtained by analyzing an analyzing target, comprising: displaying on a display device, by the computer, a message urging a user to make a selection from an input device on whether or not to create the numerical analysis data of the analyzing target using data stored in a database; searching step searching the database, by the computer, based on information related to the analyzing target, in response to receiving from the input device the selection to create the numerical analysis data of the analyzing target using the data stored in the database, and displaying a search result on the display device; and creating, by the computer, the numerical analysis data of the analyzing target by interactively modifying data of the search result displayed on the display device, and storing the numerical analysis data of the analyzing target in the database, wherein the data stored in the database include numerical analysis data, analysis model data, material characteristic data and attribute data with respect to analyzed targets, and wherein the creating interactively modifies at least one condition in the analysis model data selected from a heat analysis condition and a coupling analysis condition of each element forming the analyzing target.