The distribution of stress and strain can reflect the characteristics of part deformation in the forming process.The stress and strain calculation formulas of the floating cone sidewall deformation of a parabolic shell during its deep-drawing process were given out by using the principal stress method.Taking stainless steel parabolic parts made of SS304 material as examples,the distribution trends were drawn.The stress dividing circle diameter and the strain dividing circle diameter were obtained and the calculated result of the strain boundary circle diameter is consistent with the existing experimental data.The studies on stress and strain can show the deformation characteristics in the forming process of parts clearly,and lay down the foundation for further study of prediction and control of the limit of wrinkle during parabola-shaped shell drawing.