To provide an analysis method, for a structure having an elastic member, which uses an elastic body analysis device which permits the design of an optimum shape in a short time using a structural analysis device used for an elastic body analysis in general.

The analysis method, for the structure having the elastic member, uses the elastic body analysis device which includes an upper arm part 1 having a rubber bushing member 3 at a part of a suspension andperforms the analysis of the whole of the suspension by inputting material characteristics within predetermined ranges as numeric values together with a shape. The numeric values of the material characteristics to be inputted includes a Young's modulus and a Poisson's ratio, and the value of the Poisson's ratio is set to be close to a boundary value within the predetermined range of the performance of the elastic body analysis device. Then, if the rubber bushing member 3 is used for the upper arm member 2, the Young's modulus is set to a preset value approximating to the original characteristic of the rubber bushing member 3.