Xi Jinping’s concept of mass work is a scientific guide for mass work in the new era. As far as the generative logic is concerned, it originates from the fundamental requirements of the Marxist mass view, inherits the spiritual gene of the people-oriented thought of the excellent traditional Chinese culture, continues the centennial exploration of the CPC’s mass work, and responds to the new characteristics and requirements of mass work under the new situation. In terms of core principles, it adheres to the principle of “deeply caring for the people” to cultivate a strong sense of mass work sentiment, insists on self revolution to forge a strong mass work team, insists on putting the people first to stabilize the navigation of mass work, and vigorously conducts investigations and research to improve the quality and efficiency of mass work. In terms of the value of the times, it has created a new realm of sinicization and modernization of the Marxist concept of the masses, provided the fundamental guidance for doing a good job in mass work in the new era, and helped consolidate the foundation of the Party’s governance.