The popularization of Marxism has experienced a historical transformation from Yanan period to the period around the founding of the PRC to the new period of reforming and opening, and a connotation transition from shallow to deep, from simple to complex. Nowadays, in the Internet era, it is more necessary to promote the popularization of Marxism, even if the popularization of Marxism in confronted with the coexistence of opportunities and challenges in the era of the Internet. In the era of the Internet, to ensure the healthy and orderly popularization of Marxism, we need to strengthen the construction of professional network talent team, innovate and develop the content and form of Marxism popularization, and improve the system of Internet supervision, which is of vital significance to further consolidate Marxist guiding status in the field of ideology, promote the popularization of Marxism with the advancing times, and convoy the socialism with Chinese characteristics.