To provide a bamboo powder manufacturing device with such advantages that when bamboo powder is manufactured of a bamboo material, using a rotary cutting mechanism including a chip saw, the bamboo material can be prevented from being split or the split pieces can be prevented from being thrown scattering all around due to the casual unbalanced pressure to be applied to the material, as the remaining length of the material becomes short and further, the continuous operation to pulverize the material can be carried out without any extra labor.

A plurality of pieces of bamboo are stocked in a bamboo stocker, and the stocked bamboo pieces are fed one by one into between bamboo feed rollers 140, 150 and 160, and thus, the bamboo powder is manufactured by the rotary cutting mechanism. When the rest of the bamboo piece 110a becomes short in length, for example, the bamboo piece 110a is allowed to drop in the arrow F direction by moving the feed roller 160. Consequently, the bamboo piece can be prevented from being split or being thrown scattering all around.