The invention discloses a parameter optimization method for a control system based on orthogonal optimization and a particle swarm optimization method. The parameter optimization method for the control system comprises the steps that an orthogonal optimization method and the particle swarm optimization method are combined, the optimizing range of each controller parameter, the sensitivity relation between the controller parameters and the weight relation of performance indexes are determined through an orthogonal test, optimization is carried out by applying the particle swarm optimization method on this basis, loop iteration is carried out, and an optimization result is obtained. According to the method, a particle swarm is guided by the result of orthogonal optimization for optimization, optimizing speed is high, the optimization direction is clear, and the optimization effect is remarkable.