【Purpose/significance】 As a national discourse window, media-type think tank bears an important function of international

communication. Sentiment analysis under the topic of international relations can provide a scientific and comprehensive understanding of the development of international relations, which is of great significance to think tank development and exploration of international relations.【Method/process】 Firstly, by combining the theory of emotional identity and comparing the guidance of public opinion and the path of emotional transformation, this paper analyzes the principle of the research, and constructs the research tool. Through text mining and literature reading, 201 international relations think tank articles and 30 seed words are obtained, and the SO-PMI algo⁃ rithm is used to construct the international relations emotion dictionary. Finally, six think tanks were selected for application explora⁃tion to obtain the ranking of public opinion guiding power of think tanks.【

Result/conclusion】Finally, the author analyzes the interna⁃tional relations of media think tanks from the perspective of emotional identity. Compared with the general dictionary, the constructed emotional dictionary has the advantage of its own field, and the evaluation effect of emotion analysis in the field of international rela⁃tions is reliable.【Innovation/limitation】 Starting from the results of the media think tank's public opinion guidance process, this paper introduces the theoretical basis of emotional identity construction, and proposes an evaluation scheme to provide a new perspective for the study of international relations empowered by emotional analysis. The limitation lies in the construction part of the dictionary. The data of the training set can be expanded to further improve the accuracy of the dictionary.