Abstract: This paper proposed a digital image watermarking scheme based on Curvelet transform.Wrapping of specially selected Fourier samples is employed to implement Fast Discrete Curvelet Transform to transform the digital image to curvelet domain.First,use Arnold transform to encrypt the watermark.Then,repeat the cryptographic code many times to form a new code to creat the redundant data.Fianally,the proper position to embed the mark are chosen accoding to the characteristic of curvelet coefficients.The experiment results show that the scheme is robust to common image processing including JPEG compression,adding nosie,cut,Gaussion lowpass filter,Brighter Filter,Darker Filter,Increase/Decrease Contrast.Also the scheme has good invisibility.