The study is aimed at determining the relationship between environment knowledge and self-efficacy with responsibility environment behavior in the city of Gorontalo. The method used in this research is a survey with correlational techniques. This method describes the phenomena on the relationship between variables. This study consists of two independent variables, namely knowledge of the environment (X1) and self efficacy (X2) and one dependent variable that is responsibility environment behavior (Y). The result of the research is the relationship between knowledge of the environment with responsibility environment behavior. There is a relationship between self-efficacy with responsibility environment behavior. There is a relationship between environment knowledge and self-efficacy simultaneously with responsibility environment behavior. Based on the results of the research it can be concluded that responsibility environment behavior is depend on knowledge of the environment and self-efficacy both partial and simultaneous.