The increasingly active social ideology and value orientation in China, the public opinion surging in internet virtual space, the turbulent social thoughts, and the more complicated struggle situation in the international ideological field, highlight the importance and urgency of improving the CPC's ideological leadership in the new era. The CPC's ideological leadership in the new era is the ability of the CPC to lead the construction and development of its own ideological system, the ability to regulate and control the entire social ideological system, and the ability to regulate non-mainstream ideology. The CPC must continue to promote the innovation and development of the theoretical system of socialism with Chinese characteristics and continuously improve the CPC's ability to build and develop its own ideology, carry out mainstream ideology propaganda and education to improve the ability to control the social ideological system, lead the diversified social trends of thought to improve the CPC's ability to lead the non-mainstream ideology.