在分析了自适应小波变换和扩频特性的基础上,提出一种基于自适应小波变换的扩频数字水印算法,并利用DSP系统实现了该数字水印算法.对用DSP实现的数字水印系统进行了测试,结果表明该数字水印系统能够实现水印检测.“,”The relation between the digital watermarking and spread-spectrum is analyzed at first, A spread-spectrum adaptive digital watermarking scheme based on the wavelet transform is proposed in this paper. The system for this digital watermarking algorithm based on DSP is realized. The paper does a testing on the image digital watermarking processing system by DSP. The result from the testing approve that the system is flexible, the system can accomplish watermark embedding and detecting.