A fluid discharge device includes a valve seat, a valve body biased rearwardly with respect to the valve seat and a pusher disposed at the back of the valve body so that it can be moved forwardly to open a valve against the biasing force when a forward push force is applied. The pusher is disposed inside a shaft body so that the push force is applied indirectly to the pusher through a fluid tank removably attached to the pusher. Outward protuberances are disposed on the outer wall of the pusher, recesses are formed on the inner wall of the shaft body, and the protuberances of the pusher are positioned in the recesses to limit the rotation of the pusher. The invention relates also to a fluid discharge member wherein, when a fluid is a liquid, the pusher is biased rearward in such a manner as to define a space between it and the valve body when no push force is applied, and an engagement portion with the pusher is disposed on the shaft body so as to limit the rearward displacement of the pusher.