Abstract: The functional requirements of coal preparation standard management system have been identified by analyzing characteristics of coal preparation standard and business requirements of coal preparation users.Then all the functional modules of coal preparation standard management system have been designed and realized based on.Net architecture according to requirements.With the help of the online system,users can add,delete,edit,query and state standard,draw dynamic form,and calculate data automatically,fit curve,and store experimental data.The system has provided theoretic and technical basis for the future establishing evaluation model of coal preparation standard typical production process.