To provide a diaphragm discharge pump having a high discharging speed and a small size, and to provide a pump diaphragm for the same.

The discharge pump for discharge fluid comprises at least one valve plate 4, at least one activating pump diaphragm 3 mounted on at least one valve plate 4 in a fluid sealed condition for discharging discharge fluid to form at least one pump chamber 2 together with at least one valve plate 4, and having at least one freely bendable portion 16 elongating over at least one surrounding region for changing the capacity of at least one pump chamber 2, at least one inlet opening 7 arranged in at least one valve plate 4 for introducing the fluid into at least one pump chamber 2, and at least one outlet opening 8 arranged in at least one valve plate 4 for delivering the fluid from at least one pump chamber 2.