The mass line occupies a crucial position in the history of the CPC’s struggle to keep its original heart and carry out its mission. It not only lays a solid foundation for the CPC’s long-term governance, but also constantly meets the people’s expectations for a better life. it is the Party’s political advantage and fine tradition. in the long practice of carrying out the mass line, the Communist Party of China has accumulated quite rich historical experience. That is to firmly establish the Marxist mass view as the basis, to achieve the fundamental interests of the broad masses of the people as the core, to constantly innovate the way of carrying out the mass line as the key, to actively strengthen the mass line system construction as a guarantee. At present, the Communist Party of China still needs to work hard in the four dimensions of constantly promoting the Marxist concept of harmonious coexistence of the Party and the masses, giving play to the example role of the “key minority” in the practice of the mass line, actively adapting to the development of network information technology, taking the online mass line, improving the corresponding system and mechanism, and ensuring the normal long-term performance of the mass line.