The invention discloses a frequency modulation auxiliary service market clearing decision-making method considering a response performance index, and the method comprises the steps: forming a purchaseplan of a frequency modulation service day-ahead standby capacity according to a day-ahead standby demand, information declaration of a frequency modulator and the like in a day-ahead frequency modulation auxiliary service market; when the system enters the real-time market, according to the day-ahead transaction plan and ultra-short-term load prediction, correcting the frequency modulation planpurchased day-ahead, supplementing the lacked frequency modulation capacity, and based on the real-time operation condition of the unit, considering the frequency modulation capacity part which cannotbe provided by a frequency modulator who bids in the day-ahead, and establishing a day-ahead-real-time linkage frequency modulation clearing model, and then according to the real-time frequency changes, calling the power capacity. And the stability of system frequency control is ensured.