Surveys were caried out during 2008-2009 at Chu Mom Ray National Park and Charly Hill (Kon Tum prov.) and Chaval commune (Quang Nam prov.). 90 species belonging to 49 genera, 13 families of CoIlembola were recorded in 2 habitats (nature forest and savanna) in 3 survey places. According to places, the number of Collembola species varies from 25 species (in Chaval commune) to 32 species (in Chany hill) and 80 species (Chu Mom Ray NP). The number of species are highest in natural forest and savanna of Chu Mom Ray NP (67 and 42 species, respectively), moderate in natural forest and savanna of Chany Hill and natural forest of Chaval commune (32, 24 and 22 species, respectively) and are low in the savanna of Chaval commune (11 species). Some the quantitative indexes such as species concentration, density, diversity H' were analyzed. The results of the survey showed that the quantitative indexes of the Collembola community in soil polluted by dioxin are much lower than those in non-polluted soil.