Studies on species biodiversity, density and distribution of the oribatid mites (Acari: Oribatida) community structures had been conducted in the period of 2008-2011, in the Phong Nha - Ke Bang National park, province of Quang Binh. Samples were collected from: (1) natural forest, (2) human-impacted forest, (3) cultivated land, (4) grassland and scrub (5) and cultivated land along the streams
along to two seasons: (a) dry and (b) wet season
and according to two vertical soil layers: (-1) 0-10cm and (-2) 11-20cm. Recorded are 106 oribatid species and 1 sub-species, belonging to 73 genera and 40 families. The results suggested that oribatid mites (Acari: Oribatida) community structuresparticular1y their species biodiversity, density and distribution are closely related to the changes of the environmental conditions so they can be used as a bioindicators of sustainable management of the forest ecosystem in Vietnam.