Through an analysis of agreat deal of historical meterials and study on Panax ginseng Nees growing area, this paper gives a historical survey on the population distribution of Panax ginseng Nees moving from the banks of the Yellow river toward the North during the past 2000 years. It also analysis the principle of population Panax ginseng moving northtowards historically in a wide area, and establishes a model of ecological environment as the survival space of population of Panax ginseng Nees was destroyed ...