In recent years, the water quality control and evaluation are the most concerns of scientists around the world, especially, the using of organisms as the indicators for the water environment. The aquatic insects have been considered as an optimal group among the whole benthic macroinvertebrates in order to assess the water quality of the streams in high mountain. Especially, the national parks at the elevation over 1000m and low stream level (level 1 to level 3), the water control plays a crucial role due to its major in all ecological process. This study aims to compare the evaluated data of water quality by using the aquatic insects as biological indicators, that resulted from different analysis methods. Samples were co(lected at two sites, including the stream affected by the water flowing from the salmon station and unaffected stream in the upper the salmon station, near the Giang Ly Ranger Station in Bidoup-Nui Sa National Park. Three methods \yere used to analyze the obtained data, including Shannon-Weiner index, BMWPVIET score and the family biological index. Statistic results showed that the water quality is various and it is depend on the applying method.