A dramatic increase in carbon dioxide emissions leads to a series of environmental problems. As a kind of lower cost economic means to achieve carbon reduction target, carbon emissions trading system is of great significance to the road of China's emissions. In this study, we establish an agent-based carbon market model of steel industry through NetLogo software. This model considers the enterprises' real abatement technologies and decision-makings. We use java language to complete the interface and achieve data transmission with NetLogo. The java program can output simulation results dynamically by using a variety of techniques. In conclusion, we build a multi-functional carbon market simulation system based on java technology.