The utility model belongs to the technical field of micro powder machining and particularly relates to a material air flow homogenization device. The material air flow homogenization device comprises a powder homogenization device and an air inlet pipeline system. The air inlet pipeline system comprises a main air inlet pipeline and a plurality of branch air inlet pipelines connected with the main air inlet pipeline. A control valve is arranged on each branch air inlet pipeline. Each branch air inlet pipeline is connected with two symmetrically-arranged sector-ring-shaped branch pipes. Each sector-ring-shaped branch pipe is provided with a plurality of air inlets corresponding to each air flow cavity in the powder homogenization device. The material air flow homogenization device is reasonable in structure, enough pressure on each air inlet can be guaranteed, so that material homogenization is even, homogenization time is saved, layout is reasonable, the whole device is attractive, and accordingly the device is suitable for promotion and implementation.