The invention relates to a load forecast and 
control system and method for a metro heat ventilation and air-conditioning 
system. In one respect, the load forecast and 
control system for the metro ventilation and air-conditioning 
system is provided. The 
system comprises a basic 
database, a 
sensing system, a load forecast part and a controller. The basic 
database stores historical data. The 
sensing system provides measured data. The load forecast part works out the forecast load value of the metro heat ventilation and air-conditioning system based on the historical data and the measured data and transmits the forecast load value to the controller. The controller gives out a control command to control operation of the metro heat ventilation and air-conditioning system based on the forecast load value. The historical data and the measured data comprise strong time-variable data. According to the load forecast and 
control system, the problems that according to traditional load forecast, the precision is poor, and control 
over the air-conditioning system is not ideal enough are solved; and the load forecast and control system and method have the advantages that initial investment is reduced, operation is reliable, the energy saving effect of the heat ventilation and air-conditioning system is improved, stored data of the 
database are reduced, a load forecast model is simple, and the practicability is high.