In recent years, with the development of informationization construction of enterprises and institutions, voting appraisal becomes an important method for appraisal decision. However, the traditional voting system has widespread poor stability and scalability, and it is difficult to cope with various unexpected situations in the voting process. In this study, a real-time and high reliable voting system is realized by using the finite state machine and WebSocket technology. The system has high scalability, and can be flexibly configured to realize a variety of forms of voting information management, and can expand a variety of templates to meet the growing business needs. Several practical uses have proved that the system realizes a rapid and stable voting process, and has greatly improved the appraisal efficiency.