The invention discloses a method for controlling power consumption. The method comprises the steps that an intelligent power consumption control center monitors the situation of staff, temperature, humidity, photometric brightness and the like indoors in real time by using a control sensor, and the intelligent power consumption control center determines whether related electric appliances are started up or not and the temperature value of running of the related electric appliances by acquiring temperature data and other data; furthermore, the working periods of the electric appliances can be set, before one related electric appliance is started up, whether current time is within the working periods of the electric appliance or not is judged preferentially, and the electric appliance is not started up if not; besides, according to the corresponding relationships between set electricity prices and time periods, and according to the corresponding relationships between power consumption and electricity prices, total power consumption and periodic power consumption are calculated after the power consumption of all the electric appliances are acquired; whether the total power consumption exceeds a preset value or not is judged, if yes, a warning module is used for sending a prompt to a user, and the user is informed of the current power consumption and electric charges; according to the preset power consumption weight of all the electric appliances, some of the electric appliances are shut down. According to the method for controlling the power consumption, the household appliances can be effectively managed, and electric energy is saved.