The invention discloses an interruptible-load-based multiple-target overloading assistant decision making method. Contribution indexes of an interruptible load for reducing two target functions, namely an interruptible load cutting total amount and an interruptible load cutting total number, are respectively computed; a comprehensive contribution index of the interruptible load to the two target functions is computed by utilizing linear weighting factors; the linear weighting factors are divided into different grades; an overloading assistant decision making measure corresponding to each grade of the linear weighting factor is computed; and the final measure is selected via a scheduling operator. By applying the interruptible-load-based multiple-target overloading assistant decision making method, multiple-target optimization can be performed according to the contribution indexes of the interruptible load to the target functions, an effective solution set meeting the computation precision is given out, and coordinate optimization of reduction of the two target functions, namely the interruptible load cutting total amount and the interruptible load cutting total number, is implemented.