This research aims to develop green ecology learning media products based on Android and their influence on the environmental care character of students. This research is development research using the design instructional ADDIE model. The research subject is high school students in Mataram City. The research design used a non-equivalent control group design. The data collection technique used a validation questionnaire to assess the feasibility of Android-based green ecology learning media, teacher and student response questionnaires to assess the implementation of learning using the developed product and learning achievement tests and environmental care character questionnaires to measure the effectiveness of product development. Data analysis techniques in this study were carried out using descriptive statistics using percentages (%) and inferential statistics using ANCOVA (Analysis of Covariance) at a significance level of 5% (p <0.05). The results showed that: (1) the android-based green ecology learning media developed was valid (91.0%) and practical (82.9%), (2) the implementation of android-based green ecology learning media showed environmental care character outcomes better compared to conventional learning, and (3) the results of the ANCOVA test (Analysis of Covariance) show that android-based green ecology learning media influences students’ environmental care character (Sig.0.000<0.05). Thus, the developed android-based green ecology learning media can improve the environmental care character of high school students in Mataram City.