Perceptions of Organizational Politics and employee silence, as two topics to be avoided in organizations, have long drawn widespread attention in the field of organizational behavior and human resources. Based on the theory of social exchange and the theory of individual-organization fit, this paper aims to explore the relationship between the Perceptions of Organizational Politics and employee silence, as well as the Regulatory effect of Conscientiousness and organizational identification. Firstly, it defines the definitions and dimensions of the four variables (Perceptions of Organizational Politics, employee silence, organizational identity and Conscientiousness) through literature review at home and abroad. Based on the existing research results, this study starts from the social exchange theory and individual-organization fit theory, it constructs a model of the impact of organizational political perception on employees’ silence and puts forward hypotheses, in which organizational identification and Conscientiousness are two regulatory variables. Then through a rigorous empirical study to prove the research model proposed in this paper.