Based on different motivations of three kinds of silence behaviors, this paper combines western theory with local culture, and puts forward an integrated model of the influence mechanism of employee silence. Specifically, from the perspective of non-intervention motivation, avoidance motivation, and defensive motivation, the predictors of acquiescence silence, indifference silence and defensive silence are constructed, and their mechanism of action is discussed. This study predicts that there are different influencing factors for employee silence under different motivations: (1) the relational orientation significantly predicts the defensive silence, and is mediated by psychological safety and moderated by the doctrine of the mean; (2) emotional commitment is significantly related to indifferent silence, and is moderated by the mediating effect of organizational embeddedness and moderated by organizational voice climate; (3) organizational support is significantly related to acquiescent silence, and moderated by negative self-evaluation and attribution orientation. In theory, this research is expected to contribute new knowledge to the field of employee silence, and in practice, it can increase the specificity and operability of management practices.