The invention discloses a remote operation and maintenance control method for central air conditioning. Real-time and all-weather automatic monitoring and controlling on equipment of an air-conditioning system in a machine room can be realized; important information and data operated by a management system can be collected, recorded, preserved and analyzed; system control schemes can be optimized;the purpose of enhancing energy efficiency can be achieved; indoor environment demands can be met, and at the same time, energy and manpower can be saved; and therefore, the service life of the equipment can be prolonged, and the costs of the life cycle of the equipment can be maximumly reduced.