In recent years, the concept of low carbon environmental protection has been popularized all over the world. The nineteen main party of the party put forward the idea of "speeding up the reform of the ecological civilization system and building a beautiful China". It also has an impact on the green credit of the government while promoting the deep development of the low carbon environmental protection concept. This paper uses the index analysis method to take the annual reports published by 11 listed companies in paper industry as an example for 2015-2017 years. First, it summarizes the related concepts and literature; Secondly, the paper analyzes the quantity and quality of carbon information disclosure of the listed companies in paper making industry; and finally, according to the sample data of the listed companies in the paper making industry in China, With the help of SPSS20, we can get some conclusions about the impact of carbon information disclosure on green credit.