Provided is a small drug feeder that includes a container that can restrict the width or height of drugs so that the feeder can handle a wide range of drugs having various different shapes or sizes and be easily adjusted so as to be adapted to individual drugs. A width restricting member that increases or decreases a width of a space over a peripheral portion is disposed so as to face a discharging mechanism that discharges drugs to the outside of a container at speed higher than that of the peripheral portion. An interval between the width restricting member and the discharging mechanism is changed in accordance with a width of a target of measurement held in a measurement chamber. The height of drugs placed on the peripheral portion is restricted by a height restricting member in accordance with the height of the target of measurement.
