The invention relates to a machine room establishing and managing system, in particular to the machine room establishing and managing system which is flexible in management and easy to maintain. The machine room comprises more than one equipment area, each equipment area comprises more than one equipment group, the equipment area is defined as a company, a branch company, departments, a machine room, floors, or places designated by clients, and an area relationship is established among the equipment areas in a tree-shape form; the equipment areas are divided into loop areas, power-supply equipment areas or electric equipment areas according to electric characteristics of equipment; and equipment in the area are organized together through the equipment group(s) in the form like a cabinet. With the adoption of the system, the flexibility of equipment power loop in establishing a company can be greatly improved, the limitation to fixed hierarchy relationship is broke through, flexibility of management and maintenance can be effectively promoted, and the power circuit of one equipment area can be intuitively constructed, in addition, equipment in the equipment area can be sorted according to practical situations, so that a machine room administrator can carry out effective control and management on limits of authority.