Kongo-class destroyer is a kind of anti-air destroyer in Japan Self Defense Force. As equipped with the AGIS system and “Standard-2” missile, the destroyer can provide powerful anti-air and missile defense capability. Base on the reference of the AGIS system and “Standard-2” missile, the course of anti-air and missile defense are analyzed by using calculation method, and the capability of “Standard-2” missile with intercepting more than one anti-surface missiles is gotten. The conclusion provides the reference to the analysis of the synthesis anti-air capability of the "Kongo" destroyer.