A watermark scheme for the packaging and printing images was put forward according to the image characteristic of discrete cosine transform and human visual model fitted by Dally. Simulation experiments results showed that the watermark image and source image, the extracted watermark and original are almost the same; human eye can not distinguish. Attacking experiments of compression and cutting showed that the embedded watermark has better robustness and transparency; from embedded solutions, the embedded watermark is provided with the unpredictability.The experiments of printing and scanning image embedded watermark showed that proposed watermark scheme can detect the authenticity of presswork in a certain error range. Comprehensive results showed that the proposed watermark scheme is a good watermark technology and suitable for presswork anti-counterfeit.