ing at the effective embedding and extraction of multi-watermarking information, an adaptive multi-watermarking algorithm based on peak signal-noise ratio-normalized correlation coefficient function (PSNR-NC) optimization and undecimated dual tree complex wavelet transform is proposed. First, the algorithm uses the PSNR-NC function to determine the best embedding position of the watermark. Then, multiple independent watermarks are embedded into the color host image by the unsampled double tree complex wavelet transform-singular value decomposition (UDTCWT-SVD) algorithm. Finally, the watermark extraction algorithm is used to extract multiple watermarks in the watermarked image, which effectively realizes the embedding and extraction of multiple copyright information. The experimental results show that the embedded watermark image has good invisibility, and the proposed algorithm is robust to common image processing attacks, especially in resisting JPEG compression, noise attacks and filtering attacks.