Abstract: National defense industry is not only an important force for implementing civil-military integration development strategy and innovation-driven strategy, but also an important area for civil-military integration development and scientific and technological innovation in China.The deep civil-military integration of defense industries can play a unique role in raising the level of national technological innovation, mainly as the following:the innovation resources of national science and technology, platform construction of scientific and technological innovation, collaborative innovation, and innovation achievements. In order to conduct a comprehensive and in-depth analysis of the status of civil-military integration development in the defense industry and improve the national science and technology innovation, it is necessary to explore scientific evaluation indicators and reasonable evaluation methods. Togive full play to the deep civil-military integration of defense industries and to upgrade the national level of scientific and technological innovation, it is necessary to intensify the macro-economic planning of civil-military science and technology innovation, increase the participation of national defense industry in national science and technology innovation, improve the policies and systems for the collaborative innovation of civil-military science and technology, and strengthen the transformation of civil-military intellectual property rights and protection.