Abstract: The emphasis of the popularization of the theoretical system of socialism with Chinese characteristics should be on the grassroots level, and the key of it should be the practice. Such popularization is the essential requirement of practical property of Marxism theoretically, and the powerful guarantee for the realization of a well-off society practically. We should seize our primary task, highlight the practical features of socialism, strengthen the guarantee from system, enhance the propaganda, and speed up this huge, complicated and systematic project — popularization of theoretical system of socialism with Chinese characteristics.