The invention discloses a multi-project and multi-project organization system, and the system comprises a setting establishment module which is used for building new projects and projects, and carrying out the management of the existing projects and projects; a management station is arranged and used for maintaining all projects, projects, units and personnel; meanwhile, one project comprises a plurality of projects, the units comprise different construction units, different construction units and different supervision units, one project corresponds to one construction unit, a plurality of construction units and a plurality of supervision units, a plurality of projects correspond to a plurality of construction units, a plurality of construction units and a plurality of supervision units, and each project corresponds to a plurality of construction units, a plurality of construction units and a plurality of supervision units. A multi-project multi-project framework can be built, the incidence relation of projects, projects, units, construction, personnel, personnel roles, personnel permissions and unit roles and unit permissions is effectively organized, standardized management of multiple projects and multiple projects in the construction process is achieved, and the method effectively adapts to the stages and actual conditions of application of all project projects.