The invention discloses a smart control device provided with an amplifier circuit for controlling heating radiators. An electromagnetic valve electrically connected onto a singlechip microcomputer is arranged on a main pipe of the heating radiators; a wireless transmission module is arranged on the singlechip microcomputer which is electrically connected with a temperature sensor arranged inside a room in which the heating radiators are arranged; the singlechip microcomputer transmits the temperature inside the room measured by the temperature sensor to a control terminal through the wireless transmission module; according to the transmitted temperature, the control terminal drives the electromagnetic valve through the singlechip microcomputer to adjust the water input amount in the heating radiators; and the amplifier circuit is electrically connected between the temperature sensor and the singlechip microcomputer. According to the invention, the electromagnetic valve is arranged on the main water supply pipe of the heating radiators, the temperature sensor is arranged inside the room and the electromagnetic is informed of the temperature by the singlechip microcomputer through wireless transmission, so the water supply amount of the heating system can be regulated, controlled and monitored remotely according to the temperature inside the room and the purpose of saving energy source is achieved. When a subscriber is about to go home, the subscriber can adjust the temperature inside the room to proper temperature through remote regulation and control, therefore, the smart control device provides convenience for the life of people.