Abstract: On the basis of investigated materials in the plot, the dynamics of edge dispersal of Hippophae rhamnoides subsp. sinensis clone population was studied. Edge dispersal was that the clone population continuously invaded the space outside forest and large gaps in the forest by clonal growth and resulted in a "stair shaped" mosaic system of relatively even-aged tree patches which develop in different stages, i. e. with the increasing of distance of the patches from the largest ramet, the mean age and mean height of ramets and population biomass decreased, the population density increased with linear function. The system could move forwards at the speed of 1 m/a or the patches shifted their sites each other, which led to the clone population and maintained its stable state in even large area.