After the emerging of the jinni concept in pre-chin Dynasty, ”fu-shih” has become an emportant way for people to go after djinni. The Chinese emperors, Chin-hwan and Han-woo, despatched their followers to the sea and mountain to look for magic medicine in order to extend their emperor life. The behavior of ”fu-shi” influenced the people from all social classes, until Liu-Chao, In Tang Dynasty, Taoism was so popular that it became the national religion. Therefore the jinni concept was attained more attention, and the behavior of ”fu-shih” was more and more popular. The study of ”fu-shi” will help us to comprehend the literature of Tang Dynasty.