The status quo of China's national defense patent system is” emphasis on secret, neglect of decryption", which hindered the transformation of national defense science and technology achievements into the productivity of civilian market and greatly harmed the interests of national defense patent holder. National defense patent is derived from ordinary patent system. Openness is the primary characteristic of traditional patent system, but confidentiality is the most prominent feature of national defense patent. Therefore,based on correctly understanding the intellectual property right essence of national defense patents, it is vitally important to recognize accurately the importance of the confidentiality of the national defense patent as well as the necessity and timeliness of decryption. Therefore, it is highly recommended that the deficiencies of China's national defense patent decryption system be examined, be refined, and be reconstructed through improving decryption principles, decryption time limit, decryption standards, decryption procedures, and establishing and perfecting the supporting system.