As an important kind of credit of the social credit system，governmental credit can be defined as the overall performance during the process in which government gains its power and fulfills its responsibilities. In this article we first study the connotation of governmental credit and the differences between governmental credit and trust-in-government. Then we explain the basic structure and traits of governmental credit. After the analysis of the achievements and the shortcomings of Chinese government in building its credit during the last two years（2013-2015），we conclude that：（1）we should enhance the government’s attitudes to its credit and the public’s trust to the government；（2）we should improve the legal system and the credit rating system；（3）we should strength the interactive relation between the government and the public.