Aiming at the problem that the determination of key elements such as force， time and camouflage resources in the camouflage scheme is based on the subjective experience of camouflage commanders， the ontology technology is used to describe the camouflage characteristic parameters of military targets， the operation rules of camouflage， camouflage and false target camouflage are designed and optimized， and the framework of camouflage scheme aided design system is established. The parameters of camouflage targets after ontology are analyzed， and the time of camouflage scheme is automatically deduced. The quantitative results of the key elements of the camouflage scheme of troops and camouflage resources are automatically reasoned to form the auxiliary suggestions of the camouflage scheme. Taking three types of typical military targets in the artillery position system as an example， the proposed system can ontologize their corresponding target parameters and generate reasoning results that conform to military reality， which has certain camouflage action guidance value.