The invention discloses a power system operation correction control method based on probability power flow calculation. The method comprises the steps of extracting current operation system parametersfrom a power system, obtaining input random variable probability information, and obtaining preconceived high-risk fault scene set information; determining a post-fault system topology structure according to fault scene descriptions; obtaining post-fault system state variable probability distribution through the probability power flow calculation; judging whether correction control needs to be carried out or not; and carrying out calculation based on a power system operation correction control optimization model if the correction control needs to be carried out, thereby obtaining a correctioncontrol strategy. According to the method, influences of input variable uncertainty on system state variables are taken into consideration, and the power system operation correction control optimization model is established. The correction control strategy obtained through application of the optimization model relatively accords with the practical operation condition of the power system, after the correction control strategy is applied, the risk of operating the power system can be effectively reduced, and the operation security is improved.