The invention discloses a method for measuring the flicker emission levels of fluctuating loads. The method can measure the flicker emission levels of the fluctuating loads on line in real time, assess the liability sharing of various fluctuating loads on voltage flicker of a utility grid, evaluate the governing effect of a power quality governing device on the voltage flicker, better perform technical supervision and management of power quality on the fluctuating loads, reduce the influence of the fluctuating loads on the stability of grid voltage, and ensure safe and stable operation of power supply equipment.