Abstract: The cultivation of modern citizens is an important embodiment and basic requirement of "cultivating people by virtue", and the construction of a good moral education environment plays an important role in the cultivation of modern citizens.The textbook Morality and Citizenship of Macao junior middle school highlights the function and characteristics of moral education environment construction, focuses on the concept of modern civic education, pays attention to the construction of moral education environment to train students, which provides beneficial enlightenment for the construction of moral education environment and the shaping of modern citizens in mainland middle schools.