Abstract: If a country wants to achieve healthy and orderly development，it cannot separate with the domestic peace stability environment. The important thing to govern a country is implementation government by law. The realization rules a nation legally, achieves everything has legal support, has the law to have to depend on. In the form of legal provisions to control citizens and all political parties, groups and the specific behavior. 15th CPC National Congress, the country according to law, as our party in leading the people to govern the country's basic strategy, which explains the importance of governing the country according to law. However, China's legal system is not yet perfect, and in many areas there is still insufficient or even blank, this requires China to focus on the improvement of the system and innovation the establishment of a complete legal system to protect the country and the people's interests.
Keywords : rules a nation legally，institution innovation，democracy within the party
