In the background of the rapid development of digital technology and new media technology，the innovation of public cultural service means more and more performance for the integration of public cultural services and technology development. The using of the government performance evaluation which is based on digital means is the requirement for the government to realize its scientific and standard management and service. The using of Grass-roots cultural dynamic assessment system not only improves the working efficiency as well as making information shared together，but also lays a solid foundation for the evaluation work of the public cultural service performance，which has a good value of demonstration and promotion.