To provide an airflow fine powder manufacturing apparatus capable of suppressing oxidation of fine powder and scattering of scent, without using a large amount of liquid nitrogen.

This airflow fine powder manufacturing apparatus 1 manufactures fine powder by crushing and classifying crushing object material while conveying it by airflow, and comprises a filter 49 filtering recovered and sucked fine powder together with gas used for conveying by airflow; a cooling means 60 cooling the gas filtered by the filter 49; and a circulation line 59 connected to the inside of a casing 3 serving as a crushing and classifying region for circulating again the gas cooled in the cooling means 60.