The microbial quantities of rhizosphere at Huoditang forest region of the Qinling mountains are analysied. The result showed that the rhizosphere quantities of Chinese pine-Armand pine mixed forest>larch forest>Pine-oak mixed forest, and the quantities of bacterium were dominant. The microbial quantities order of soil under alike forest types was rhizosphere>non-rhizosphere; soil on the bottom of tree stem (within a range of 0～5cm)>the soil-body beyond 30cm of tree stems and used as control, and there had significant differences in the different forest types. The quantities distribution of rhizosphere microorganisms were positively correlated with the soil enzymic activities, contents of organic matter and soil nutrients.