Learning Geography in the classroom is less effective, so learning strategies are required. The outdoor study strategy is a type of learning strategy in which teaching and learning activities take place outside of the classroom. The purpose of this systematic review is to identify outdoor study learning in Geography in high school. This is a qualitative study using a systematic review method. Narrative analysis is used in this research design. The findings of a study on outdoor study learning in Geography subjects at the high school level have been widely applied to environmental and sustainable development materials, which were obtained in 7 journals (29 percent), and based on the research findings measured variables related to outdoor studies, namely learning outcomes, which were obtained in 19 journals (79 percent). Based on the findings of this systematic review, it is possible to conclude that the outdoor study strategy can be used at all levels of education. Furthermore, the outdoor study strategy can increase activity, enthusiasm, motivation, responsibility, respect for others, care for the environment, make it easier for students to understand the material, and improve learning outcomes. learners.