This is an initial exploration of serious games for preschool children. Finally, an educational 3D game for kindergarten environmental education was completed. It uses digital media in combination with classroom teaching to develop environmental awareness among Chinese preschool students aged 5-6. Although environmental awareness is a dynamic structure throughout life, it is important to lay the foundations of environmental awareness in childhood to demonstrate positive attitudes and behaviors towards the environment.In China, such as Shanghai and Beijing, garbage classification has become a strict requirement, but it is difficult to implement because China started garbage classification late. This is why it is so important for children to develop a sense of waste separation at an early age.