Abstract: In order to study the behavior of fast pyrolysis of corn stalk powder, a set of fluidized bed with feed-in amounts of 5 kg/h was designed. 450, 475, 500 and 525℃ were adopted and aluminous soil was used as bed materials. The influence of reaction temperature on the collection rate of pyrolysis production was specially investigated. It showed that the collection rate of bio-oil was relatively high, that was 37.5%, at 500℃. The collected bio-oil presented two layers and the qualitative analysis of bio-oil components were made by gas chromatography-mass spectrometry (GC-MS) respectively.