With the rapid development of new media technology，the social responsibility of new media is facing new situation and new challenges：technical ethics is embedded in the production and distribution process of media content，the responsibility boundary of new media is eliminated and reconstructed and the problems of user data and privacy are emerging as new technology advancing. Facing the challenges，state，industry，platforms and users should exert fully subjective initiative and promote new media to better fulfill their social responsibilities from their own perspectives. In 2019，the performance of social responsibility of new media is at a medium level，with an average score of 2.496563 （scoring rate of 49.93%） for the seven types of platforms. With the evaluation index system has been adjusted in 2019，the performance of the target object platforms are better than previous in the third-level indicators