The main purpose of this thesis was to discuss the meanings of Juan Chi's theory on life and death during the period of bamboo Grove in Wei and Chin Dynasties. Looking back into the past, the theory of destiny based on the interaction between human and universe created by Tung, Chung-Shu in Han Dynasty was heavily challenged and criticized by some scholars like Wang Chung and Wang Fu in East Han Dynasty, and then, Wang Chung et al created the theory of destiny based on mysterious and unchangeable natural inaction, and the Taoists in Wei and Chin Dynasties developed their views on life and death with this natural theory on life and death. In this discussion on the inner meanings of life and death, I would like to take Juan Chi's theory on life and death as the main object and scope of this research. Therefore, this thesis emphasized Juan Chi's respect and great attention to Laotzu and Chuangtzu so as to show the influence of Taoistic views of nature on Juan chi's thoughts. Then, this thesis elaborated on this topic from the following points: firstly, to show the disasters that the human beings have to face for their violation of laws of nature and to show that the human beings lose the faithful meanings of life while they were pursuing external materials; secondly, to show the effect of compliance with the nature on life and death. Juan Chi made use of "sage being", "generous being", "pure being" and "sacred being" of ideal scholar to show that the ideal scholar could "mould his temperament, prolong his life and comply with the nature" in his lifetime, and could return to the nature and soften his spirit in conformity to the law of nature after death. Therefore, "happy for ever" through inaction and compliance with the nature was the desired embodiment of Juan Chi's theory on life and death. In short, this thesis was constructed by the "nature" that ushered in the possibility of forging an "ideal scholar" by seeing through life and death.