Abstract:As the management difficulty of construction projects continues to rise, coupled with the construction project of the construction project, the organizational structure between the participating units of the project shows a modularity characteristics. Therefore, from a modular perspective of the organization, Two important dimensions in the degree of modularity, including interface design rules and approximation of approximately decomposition. At the same time, the cooperation behavior of various participating units is introduced as intermediary variables. Based on the results of 196 questionnaire results, the impact of its impact on project innovation performance is empirical. Essence The results showed that the degree of modularity of the organizational form of construction projects had a significant positive impact on project innovation performance. The cooperation behavior of the participating units played an intermediary role between the degree of modularization of the organizational form and the project innovation performance; Under the EPC model built, the division of work between the participating units is clearer, and the integrated efficiency and collaboration between the participating units are also more prominent, which is more in line with the clarity of the high interface rules and the high -profile resolution of the high and nearly similar. The form of modular organization has a more obvious role in improving project innovation performance. Therefore, during the implementation of the construction project, not only should we pay attention to the cooperation behavior of the participating units, but also optimize the organizational form of the project.