Eco-anxiety is an important issue and continues to be developed as a scientific study. However, in developing countries, the issue of eco-anxiety has not yet become a popular topic to discuss. In fact, the problem of the environmental crisis is an urgent matter that needs to be reviewed from various scientific disciplinary points of view. This article discusses various eco-anxiety studies based on a number of empirical studies that have been conducted. The literature review used is a narrative method with a qualitative approach. The results found that the mental response that emerged from eco-anxiety did not only have negative connotations, but there were also positive ones. The human body biologically experiences certain processes when suffering from eco-anxiety related to hormonal and physical change. The aspects of the mind that represent the concept of eco-anxiety are worry, care, and stressed. The feeling aspect is represented by worried, angry, and afraid. Meanwhile, behavioral aspects are represented by depression, pro-environmental, and stress. From the results of this review, further research is needed to find effective strategies to change a person's eco-anxiety into a more positive mental response and action towards the environment.