With an environmental perspective on literature, one can analyze and evaluate the human view of nature and how he interacts with the nature around him, while providing the basis for the formation of works that present a new view of nature. In this research, using a descriptive-analytical method and using library resources, the works of Nima, Sepehri, and Shamloo have been studied, while examining these poets' view of nature, the impact and contrast between literature and the environment, their approach to environmental issues, and human relations with nature. Nima's poetry is full of unity with nature, which can be considered the result of his careful view and fusion with nature. In Nima's view, man and nature are two inseparable components, and in his poetry, nature with its beautiful elements is always a source of peace and happiness for mankind. In Sohrab's poetry, the existence of man is very weak, but on the other hand, he pays special attention to the surrounding environment. By returning to nature, he seeks the simplicity of the past and the pristine natural landscapes. Sepehri's relationship with nature is a direct one. With proper reflection, Sohrab has reached a new level of awareness and experience, and this awareness has made him humble towards nature and its manifestations and always support the rights of the surrounding environment. Shamloo considers the human child to be an extract from the mythological connection of the elements of nature and awaits bright days when love and friendship will rule the world.