The invention discloses an emergency frequency control method considering a frequency distribution characteristic of a power system, and belongs to the technical field of power systems and automationthereof. By calculating an average electrical distance between a location where each control measure is placed and specific units in a leading group and a remaining group, for a control measure, the location of which is relatively close to the unit of the leading group according to the electrical distance, the instruction issuing time is controlled to make sure that the measure works in the firsthalf of an oscillating period; and for a control measure, the location of which is relatively close to the unit of the remaining group according to the electrical distance, the instruction issuing time is controlled to make sure that the measure works in the second half of the oscillating period. The emergency frequency control method disclosed by the invention relieves the problem of unbalance power of a power grid after the system is subjected to high-power fault disturbance, effectively reduces the influence on a local frequency response-based control effect caused by frequency spatiotemporal distribution and improves the safety and the stability of the power grid.