The purpose of this study is to explore and identify the practice of applying science processes in early childhood teaching by preschool teachers with a focus on approach, interaction and environmental management. This study uses a descriptive qualitative approach. It involves 5 preschool teachers from different preschools. Teacher selection based on excellence and active involvement of preschool teacher. To be more precise, this study is referred to as a multidisciplinary study. Data collection is through interviews and is supported by document observation and analysis. Data were analyzed using Atlas. Ti 7 software to generate themes. The finding of the study concludes that the effectiveness of early science learning depends on children's mastery of science process skill. Therefore, teacher pedagogical knowledge is very important. This study is able to provide guidance on the application of science processes in early science teaching with a focus on environmental management and can be used by preschool teachers in early science teaching.