Flow shop problem (FSP) is a kind of typical scheduling model

which has higher practical value when added interfering factors.Intelligent water drops optimization (IWD) is a kind of new swarm intelligence algorithm.In order to resolve the inadequacies when solve FSP

the algorithm combined with Pairwise local search.This approach not only help algorithm escape from local optimization

but also improves the efficiency and performance of the algorithm.By constructing disruption management model which is a new job sudden arrival scheduling

and doing a simulation of the CAR8 problem

it turns out that the proposed algorithm is feasible and effective.