Abstract: Internet has maximized the social sharing of information resources, and brought enormous benefits and joy to human beings; at the same time, it has also brought new impetus to the country's political development and made a great impact on political stability;Internet breaks through the traditional monopoly of information, which makes ideological security face new challenges. Internet has become a newpublic opinion expressing channel which influences the political decisionmaking.Networks participation makes the traditional political participation face new challenges. With these unprecedented shocks and under the challenges, how to maintain political stability in our country has become the urgent new topic for those in power to consider and tackle.