One of the basic and important components in mutual interactions between the leader and the follower is trust in superior leadership style. Therefore, the purpose of this study is to determine the priority of the effect of each of the leadership styles on trust in the leader and to examine the consequences of the mediating role of trust through the meta-analysis of existing research in this field. This research is practical in purpose and quantitative in terms of the nature of data. The statistical population of the study includes 257 valid domestic and foreign articles, 76 of which were analyzed using the judgment method and CMA2 software to analyze them. The results of the analysis showed that among the 11 identified and effective leadership styles for trusting the leader, the highest effect was related to empowering leadership (0. 889), adaptive leadership (0. 835), authentic leadership (0. 780) and ethical leadership (0. 704). Servant (0. 622), transformational (0. 673), participative (0. 613), distributed (0. 480), charismatic (0. 430), paternalistic (0. 290) and transactional (0. 234) leadership styles are the next priority. The results of meta-analysis also show that trust in the leader is important due to its mediating role in relation to leadership style, and among the 23 most susceptible variables of trust in the leader, the largest effect is related to: Perception of the effectiveness of the leader (0. 701), organizational, emotional commitment (0. 654), high potential team feeling (0. 626), acceptance and capacity for organizational change (0. 526) and Psychological Well-being (0. 505).