International news plays a crucial role in shaping the image of a country [1]. In this article, seven reports on the new coronavirus in the Chinese and American news media, CGTN and USA Today are used as the research materials. Through the comparative analysis of the Attitude and Graduation system of the Appraisal theory, we find the similarities and differences in the discourse between China and the United States for further analysis and further analyze the relationship between discourse expression and national image. At last, we put forward corresponding suggestions to international reports; promote the spread of Chinese power and the positive construction of Chinese international image.