In order to solve the deployment problem of alert aircrafts for large ship formation an optimal deployment model was proposed based on partition of combat zone warning zone and threatening zone.First rules for partitioning the combat zone and warning zone of the alert aircraft were analyzed and a programming coordinate system was established.Then the deployment degree matrix based on combat zone the important degree matrix based on warning zone and threatening zone and collaborative degree matrix based on collaborative detection were studied quantitatively.The optimal deployment model was established.Simulation result shows that the model has strong applicability and can automatically generate a reasonable and efficient optimization deployment scheme.