As indicated by both literature and empirical facts,tourist activity is a human universal prescribed in anthropology,and is a phenomenon across history,region and culture.Therefore,the time of the budding of tourist activity in human history has remained an unsolved issue in tourism research.The origin of tourism involves a series of important theoretical issues such as the nature of tourism,why and how tourism is possible,and where tourism is heading,hence it is related to the development stage,research orientation and maturity of tourism science.This article believes that the definition of t...