Aiming at the problem of carrier-based aircraft support under the ammunition loading work,the constraint relationship between the ammunition loading operation and other support operations of the carrier-based aircraft is analyzed,and based on the constraints of support resources,the completion time and load variance of the carrier-based aircraft support operation are the smallest.As an optimization objective,a support job scheduling model considering the ammunition loading work is established.An improved NSGA-Ⅱ algorithm is proposed by designing a chromosome segment coding method based on ensuring the priority of process,which avoids the generation of a large number of infeasible solutions.Taking a foreign aircraft carrier as an example,the feasibility of the scheduling scheme obtained by the model and algorithm is verified.