This paper discusses the method of recurrence of the deflection of metal bar by means of holography,and calculates the deflection of metal bar according to the theory of deflection.

• 论述了利用激光全息技术再现金属梁挠度的方法。同时根据挠曲线的数值解,计算出挠度的理论分布,计算结果与激光全息实验符合得很好。