Abstract: The 2018 version of the "Outline of Maoism and Socialist Theories with Chinese Characteristics" course textbook is composed of three parts that are independent in form, that's to say "One initial heart":seeking happiness for the people and reviving for the nation; "one main line":Marxism in China; "One Theme":adhere to and develop socialism with Chinese characteristics. The content of three parts is an inseparable organic whole. Teachers should have systematic thinking in the process of transforming the content of teaching materials into teaching content and must acquire an full understanding of the internal connection among three parts to reinforce class teaching quality and practical effect.