Early childhood is a period of rapid development and growth, and regardless of physical, psychological, and social abilities, young children at this stage have great plasticity and strong imitation ability. Childhood is a critical period for individual learning; so preschool teachers must provide young children with appropriate moral education at this time. This paper is to discuss the importance of moral education for young children in Taiwan, analyze the relevant literature, and review the teaching concepts and methods of moral education. Moral education of young children is important because the ultimate goal of early childhood education is to shape the character of young children; so its content must focus on moral education, which cultivates moral values in young children. Moral education also develops an understanding of empathy and social responsibility for young children. This paper argues that preschool teachers must (1) respect young children's moral subjectivity; (2) understand that early childhood is a critical period in which moral behavior is shaped, and (3) organize young children's moral teaching from the concrete to the abstract. In terms of the optimal teaching methods, this paper proposes that preschool teachers use: (1) moral storytelling, (2) instructional media, (3) picture books, (4) discussion of moral issues, (5) peer learning, (6) moral narratives, (7) modeling moral behavior, (8) incorporate young children's life experience, and (9) invite young children's parents to participate in moral education. This study contributes to the literature on early childhood moral education and provides an insight into the praxis of moral education for young children in Taiwan.