Air attack and air defense training is faced with problems such as system construction and situation construction， and traditional training methods can no longer adapt the training needs of the new period.. This paper analyzes the advantages and disadvantages of outside field real-force training and inside field simulation training， and puts forward the integration training method of inside and outside field based on the virtual-real combination. The key technologies for realizing the virtual-real combination are analyzed， and the technology of real-force sensing virtual-force based on air feed is studied. Theoretical derivation is given from the aspects of target echo control， flight track planning and multi-radar flight track fusion， and the technology of virtual-force fighting real-force based on agent is analyzed， which provides a theoretical basis for the virtual and real mutual sensing and mutual resistance. The comprehensive use of inside and outside field resources has been applied for example， providing reference for the follow-up system construction and training mode innovation.