Bar code appears in the course of the distortion increased the difficulty of identifying bar code, This paper presents a bar code image distortion correction algorithms, using two-dimensional bar code of the structural features can be effectively and quickly determine the location bar code symbols and Locator "L"-type intersection, And only one rotation can be formed the standard bar code graphics, laying the foundation for Identification the precise cuts . The method is simple calculation, and easy to implement and to be good effect.