The core socialist values are the core and the most important principle and belief of socialism. Craftsman's spirit is highly consistent with the connotation of the values and also an important carrier to cultivate socialist core values. Making great efforts to promote the craftsman's spirit is of great significance to promote the cultivation and the practice of socialist core values. The connotation of the craftsman's spirit is mainly embodied in three levels: that is, the creative spirit, the working attitude of excellence, the perfect unity of Taoism and technique. Through the in-depth discussion of the crafts-man's spirit from the aspects of national prosperity, social justice, life’s dedication, and other aspects, it can be found that the craftsman's spirit has a non-negligible value in the cultivation of socialist core values.