A kind of Fourier hologram digital watermarking method used in color printing anti-fake image was designed based on Burch's coding method. The relation between tilt angle in scanning process and the quality of the extracted watermark was studied with printing and scanning experiment. The results showed that the watermarking algorithm has good robustness to printing and sloping attack in scanning process and can satisfy the security requirements of color printing image; the smaller of tilt angle (<15°) the smaller the impact on the quality of extracted watermark;when the tilt angle is 45°, the quality of extracted watermark is a little better than other angles.