The purpose of this study is to study the components of succession breeding and use the meta-analysis method to obtain the effective size of each of them (Case study: Hajj and Pilgrimage Organization). To do this, after studying the research literature and identifying the components of substitution breeding from it, they were classified and separated and the components were extracted. This research is based on the purpose of applied research and based on descriptive and exploratory nature. In terms of method, meta-analysis technique has been used to extract the results, which is a qualitative study. In the present study, articles published in various sources have been used. At the beginning of the study, in the first stage, 81 studies were collected. In the second stage, those articles that had p-value, t-value and other statistics were separated from each other. Of these, 44 accepted articles were used. According to the findings of this study, due to the lack of a succession model in the Hajj and Pilgrimage Organization, the success of the succession program is prone to success, and this can be due to the appropriate potential in succession management and the amount of strategic improvement of human resources, the organization's commitment to succession. Senior management support in the path of career advancement.