提出用全息元件实现变形分数傅里叶变换 .用全息方法制作在两个方向上具有不同焦距的变形柱透镜 ,且两方向上的焦距可随全息元件记录条件不同而改变 .用此元件实现了在不同方向上具有不同阶的变形分数傅里叶变换 ,讨论了用全息元件实现这种变换的条件 .并提出用此元件构成一种新的光学安全认证系统 ,给出了实验结果 Holographic element is proposed to realize the deformation fractional Fourier transform.The holographic method is used to fabricate a deformable cylindrical lens with different focal lengths in both directions and the focal length in both directions can be changed according to the holographic element recording condition.With this element, Which has different orders of deformation Fractional Fourier Transform in different directions and discusses the conditions for realizing this transformation by using holographic element.A new optical safety certification system is proposed with this element and the experimental results