An ejection device is provided with: a powder ejection mechanism which includes a powder ejection unit (63), a powder housing unit (68) in communication with the powder ejection unit, and a first compressed air inlet unit in communication with the powder housing unit a liquid ejection mechanism which includes a liquid ejection unit (61), a liquid housing unit (98) in communication with the liquid ejection unit, and a second compressed air inlet unit in communication with the liquid housing unit an operation member (71) which includes first and second connection switching units a first compressed air supply unit (72) which has a state of supplying and a state of not supplying compressed air to the first compressed air inlet unit, and between which the state is switched in accordance with the amount of displacement of the first connection switching unit which moves together with the operation member and a second compressed air supply unit (73) which has a state of supplying and a state of not supplying compressed air to the second compressed air inlet unit, and between which the state is switched in accordance with the amount of displacement of the second connection switching unit which moves together with the operation member.
