Summary The Buddhism of Wei and Jin Dynasties refers to the Buddhism of Three Kingdoms, Western Jin and Eastern Dynasties. This is a period of social turmoil and great change of thought. Coinciding with this upheaval,the Indian Buddhism which was immigrated in the late years of Han Dynasty was gradually accepted by Chinese people. And,the Chinese Buddhism was formed in this special historical background. This paper deals with Zhu Shixing and the sutras emphasized by him,the prajna thought of Zhi Qian of Eastern Wu Dynasty,the prajna and dhyana thoughts of Samghavarman of Eastern Wu Dynasty, the prajna thought and its link with the mysticism of Wei and Jin Dynasties, the prospering of interpreting Buddhism with Chinese Confucianism and Taoism,the characteristics and influence of Wei and Jin Buddhism, etc. The purpose is to explain the development of the Buddhist thought in Wei and Jin Dynasties in order to show its value and significance in the history of Chinese Buddhist thought.