The invention relates to a micro-powder airflow mill. The micro-powder airflow mill is characterized in that an adjusting gasket and a sorting wheel are arranged on a motor spindle; a motor base is fixedly connected to an upper cover; the upper cover is fixedly connected to a supporting plate of a mill chamber outer shell; the periphery of the motor base is connected with a plurality of air connectors; a mill chamber inner shell is arranged in the mill chamber outer shell; a cavity of the mill chamber inner shell serves as a mill chamber; the bottom of a nozzle fixing disc of the mill chamber inner shell is fixedly connected with a plurality of nozzles; the nozzle fixing disc of the mill chamber inner shell is arranged on a bottom disc; the lower end of the bottom disc is fixedly connected with auxiliary air connectors; the multiple auxiliary air connectors are fixedly connected to an auxiliary air connector fixing seat; a discharging bush is arranged in the center of the nozzle fixing disc and the center of the bottom disc; a clearance is arranged between the end face of the sorting wheel and the end face of the nozzle fixing disc; a feeding mechanism and an air inlet pipe are fixedly connected to the outer circumference face of the mill chamber outer shell; and the lower end of the discharging bush is connected with a finished product discharge opening. The micro-powder airflow mill is reasonable in structure, the material particle size distribution concentration ratio can be effectively increased, product quality is good, and cost is low.