A system control method includes: receiving a control task; randomly selecting a chromosome from an evolution pool according to the control task, and decoding the chromosome to obtain (N+1) ensemble policies, where the chromosome includes (N+1) gene fragments, each gene fragment uniquely corresponds to an ensemble policy, each ensemble policy uniquely corresponds to a preset function, one ensemble policy is used for assigning a weight to a preset function that uniquely corresponds to the ensemble policy, the evolution pool maintains two or more chromosomes, and N is a positive integer greater than or equal to 1; performing an ensemble calculation according to weights assigned by the (N+1) ensemble policies, to obtain an ensemble control output; and generating a control signal according to the ensemble control output, where the control signal is used for performing system control. In embodiments of the present invention, an evolution pool maintains multiple chromosomes, to maintain and manage a control policy, so that a dynamic control method is provided for a complex control environment in reality, to improve adaptability of a control system, thereby improving control efficiency.