Abstract: Land consolidation is an important pathway to promote large-scale agricultural operations, yet existing research has seldom provided in-depth explanations or systematic reviews of the internal mechanisms and implementation frameworks of land consolidation practices. Based on the logic of collective action, combined with the synergy theory of institutional economics, this paper constructs the analytical framework of "subject of interest, property right object, institutional environment", utilizes the survey data of the natural villages belonging to the typical model villages in Y County of G Province, and adopts the csQCA method of applying the concurrent relationship of multiple factors, and the results of the research show that there are three synergistic modes: the double advantage promotion mode of the subject of interest and the object of property rights, the synergistic promotion mode of the advantage of the subject of interest and the democratic governance system, and the synergistic promotion mode of the advantage of the object of property rights and the clan system. The conclusions of this paper are not only conducive to the theoretical sorting out of the internal mechanism for the successful realization of land consolidation, but also provide experience for localities to create conditions for the realization of the "engineering construction and tenure adjustment" parallel mode of land consolidation.

Key words: land consolidation, consolidation of small plots into large fields, typical model, collective action, csQCA