Digital watermark technique just arises in the last few years, it is playing an important role in protecting the intelligent property right as well as promoting the Internet electronic business. The digital watermark printing is hard to discover, and it is safe, dependable, anti-attack. It effectively defeat the behavior of infringement and piracy to digital products. The software system of Onets wartermark can conceal watermark printing in arithmetic figure signal( MPEG1 and MPEG2), providing the License of that software to customer at the same time. The system meets the requirement of European Digital Watermark standard.