Material abundance and cultural-ethical enrichment are the fundamental requirements of socialist modernization and the basic connotation of common prosperity. The common prosperity of spiritual life is not nihilistic and fantasy. Only in the exploration of socialism with Chinese characteristics can it become a reality. The Socialism with Chinese characteristics development path initiated by the CPC has remarkable advantages, which provides strategic advantages for enriching the people's spiritual world. The leadership of the Party in cultural construction, Marxism and its innovation theory of China, cultural governance with Chinese characteristics, cultural prosperity and development in the new era, and the excellent genes of Chinese culture provide a strong guarantee for the richness of the spirit of the new era and new journey. Giving full play to these remarkable advantages will certainly promote the achievement of common prosperity in spiritual life. The leadership of the Party in cultural construction provides a strong political guarantee for achieving common prosperity of spiritual life, which is the greatest advantage for achieving common prosperity of spiritual life. We should strengthen the party's leadership, give full play to the core advantages of the party's leadership in cultural construction, raise the construction of spiritual civilization to a more prominent position, straighten out the party's leadership and management system for the construction of spiritual civilization, and continuously promote the reform of spiritual culture under the leadership of the party. Marxism and its Chinese innovation theory provide scientific guidance for achieving common prosperity of spiritual life. We should strengthen the theoretical cohesion, give full play to the ideological advantages of Marxism and its Chinese innovation theory, promote the ideal form of human spiritual world into reality with the theoretical innovation of Marxism, promote the coordinated development of material civili.