This Unity2D-based garbage classification popular science game is a mobile phone app running in Android environment. Its main purpose is to popularize relevant information about "garbage classification", cultivate people's awareness of environmental protection and assist people to correctly classify and dispose of garbage. Its main function is divided into three parts: basic knowledge learning, games and questions and answers. The game is made through Unity2D, and the interface design style is suitable for all ages and mainly for children and adolescents. It is hoped that this app can help the people understand and implement the "garbage classification" policy more quickly, and raise the awareness of environmental protection of the whole people.