Considering forest from the perspective of sustainable development and the need for maintaining tree species as genetic resources is priority; so identification and evaluation of forest's habitat conditions are the main parts of sustainable development. The study of ecological conditions of different species gives some basic and important information which leads to be applicable in optimizing the management of forest resources .This study aims to identify the Ecological status of yew, the main factors affecting the ecological distribution restrictions of Yew and establish a new life. In recent years, its affiliated agents and the world have been analyzed. And Cutting trees in order to prevent livestock toxicity has been identified as the most important causes of extinction. We can protect the forests by supposing some scheme for solving social and economical problems and giving facilities such as protecting forests by officers.