全球迅猛发展的 Internet 网络给世界经济带来了新的商机，数字技术提供了与原作品同样精美的复制品， 但同时使得数字媒体的版权保护问题日益突出。 本文介绍了最新的多媒体版权保护技术－数字水印的概念，在阐述数字水印的分类和特性的基础上，提出了以数字水印为基础的数字作品版权保护系统，并研究了数字水印系统的处理框架和数字水印算法。最后对数字水印技术进行了展望。-rapid development of the global Internet network to the world economy has brought new opportunities, Digital technology works with the original copy of the same exquisite, But at the same time makes digital media copyright protection issues have become increasingly prominent. This paper introduces the latest multimedia copyright protection technology-digital watermark concept, In explaining the classification of digital watermarking and identity on the basis of put forward a digital watermarking-based digital copyright protection system, and study of digital watermarking system processing fr a mework and digital watermarking algorithm. Finally, the digital watermark technology forward.