The invention discloses a system adaptive control method with an action threshold considered. The method comprises the following steps: 1, the control method continuously detects and controls the frequency and the voltage deviation of the system, and when the deviation is smaller than a DFIG (Doubly-Fed Induction Generator) action threshold, the DFIG cluster does not participate in the adjustment of the system; and the DFIG adopts a power control mode, a fuzzy adaptive controller does not act, and a STATCOM/BESS (Battery energy storage system) adjusts the voltage and the frequency of the system through fuzzy adaptive control; 2, when the system voltage or the frequency deviation is further expanded, the DFIG turns to a voltage and frequency control mode from the original power control mode, and the control sensitivity of the DFIG is smaller than that of the STATCOM/BESS; and 3, when the system deviation is increased continuously and is larger than a coordination action threshold, the STATCOM and the DFIG act at the same time, and the voltage and frequency control mode is adopted. The sensitive adjustment mode is adopted, and the stability of the system is greatly increased.