The invention discloses a device and a method for heating asphalt in a laboratory. The device comprises a furnace disc, a tank, a seal cover and exhaust barrels. The tank is positioned on the furnace disc, a heat-insulation layer and a temperature sensing layer are sequentially arranged on the side surfaces of the tank from the inside to the outside, a plurality of temperature sensors are arranged in the temperature sensing layer, the seal cover is positioned at a top opening of the tank, one end of each exhaust barrel is communicated with a corresponding side surface of the tank, a gas outlet is formed in the other end of each exhaust barrel, adjusting valves are arranged on the exhaust barrels, an electric heater and a controller are arranged in the furnace disc, a temperature control rotary knob and a heat-insulation rotary knob are arranged on the side surfaces of the furnace disc, the temperature control rotary knob is used for adjusting the heating temperatures, the heat-insulation rotary knob is used for adjusting the heat-insulation temperatures, and the controller is connected with output ends of the temperature sensors, a control end of the heater, the temperature control rotary knob and the heat-insulation rotary knob. The device and the method have the advantage that the asphalt can be efficiently and safely heated by the aid of the device and the method.