The utility model relates to a dynamic asphalt density testing device. According to the device, at least one dynamometer is fixedly arranged on a transverse beam of a bracket; a force measurement ball is suspended at the lower end of each dynamometer; a test barrel is arranged below the force measurement ball and is arranged in a heating cylinder; the heating cylinder is connected with a temperature controller by virtue of a wire; and the temperature controller and the dynamometers are respectively connected with a computer by virtue of wires. According to the device disclosed by the utility model, the asphalt density under different temperature conditions can be measured, a dynamic change curve of the asphalt density is acquired and is monitored in real time, the structural design is simple, the operation is convenient, the measurement speed is high, and the experimental detection efficiency is greatly improved.