To provide a device which can fill coffee powder without labor and without splashing the coffee powder into a regular container such as a paper container.

A coffee mill includes an introduction section 1 which introduces coffee beans at the upper section, a grinding section which grinds the introduced coffee beans, and a discharging section which discharges the coffee powder ground by the grinding section. The coffee mill also includes a guide cylinder 11 having a vertical axis, which is formed at the discharging section, an injection cylinder 12 which is vertically slidably inserted in the guide cylinder 11, an operating section 13 which vertically moves the injection cylinder 12, and an upper limit stopper 14 and a lower limit stopper for the injection cylinder 12.