A method and apparatus for grid high-power mis fault load group participating in frequency modulation include determining actual frequency response load amount participating in grid frequency modulation; Determining a response load group participating in the power grid frequency modulation according to the actual frequency response load amount participating in the power grid frequency modulation,and stopping the response load group participating in the power grid frequency modulation to help the power grid restore frequency; When the power grid frequency is restored to the primary frequency modulation dead zone range, the minimum shutdown time of the response load group participating in the power grid frequency modulation is determined, and the response load group participating in the power grid frequency modulation is restored to operation according to the corresponding minimum shutdown time. The technical proposal provided by the invention can effectively guide the frequency response load to participate in frequency modulation quickly and orderly, alleviate the frequency drop degree of the power network, reduce the load shedding cost of the load emergency control measures, and reduce the influence on the user.