中文摘要：

中共十八届三中全会提出全面深化改革总目标时，强调到2020年要形成系统完备、科学规范、运行有效的制度体系。制度对政治安全起着核心保障作用，而制度僵化则是政治安全的致命威胁。一旦出现制度僵化的现象，制度不仅不会成为政治安全的有力保障，反而会成为政治安全的阻碍。因此，在全面深化改革时期，欲求维护政治安全就需要通过深化体制改革，克服制度僵化现象，不断推进制度创新。制度创新是制度生命力之所在，也是保持制度活力的源泉，更是维护政治安全的根本路径。

英文摘要：

The 3rd Plenary of the 18th CPC Central Committee sets out the overall objective for comprehensively deep- ening reform, which emphasizes that by 2020, the institutional system shall be in place with complete configuration, scien- tific and standardized structure, and effective operation. Institutional system plays a core role in maintaining po｜itieal secur- ity, while institutional rigidity is a fatal threat to political security. Once the rigidity is in existence, institutional system will not be a strong safeguard for political security, and will become an obstacle for political security. Therefore, when compre- hensively deepening reform, the maintaining of political security should be done with deepened institutional reform to over- come rigidity in system and to constantly promote institutional innovation. Institutional innovation is the vitality of the sys- tem, the source of life-force of the system, and the fundamental path for maintaining political security.