Wind generating stand-alone supply systems has presented new demands for induction generator. The dual stator-winding induction generator is presented for these demands. In this paper, the electromagmeshic field analysis for an optimal sample of dual stator-winding induction generator is proposed via maxwell2D ANSOFT. The physical model and mesh cutting model of FEA are setup. The field analysis of no-load and rated-load are presented respectively. Post disposing results are analyzed.